WO2014117426A1 - Composite filter element and adapter thereof - Google Patents

Abstract

A composite filter element and an adapter thereof. The composite filter element comprises a filter element housing body (1) formed by a filter element housing (11) and a filter element housing cover (12). The filter element housing body (1) is internally provided with a PP cotton filter element (2) and an activated carbon filter element (3); a connection gland (4) is spaced between the PP cotton filter element (2) and the activated carbon filter element (3); the PP cotton filter element (2) is clamped and sleeved with a PP cotton head (5); the PP cotton head (5) is connected with a filter element divider (6) which is provided with a water inlet sub-channel and a water outlet sub-channel; a positioning support (13) is integrally formed on a bottom wall of the filter element housing body (1); a partition board (7) seats on the positioning support (13), and forms a purified water chamber (D) with the bottom wall of the filter element housing body (1); a purified water conduit (8) for communicating the water outlet sub-channel with the purified water chamber (D) is arranged passing through the centers of the PP cotton filter element (2) and the activated carbon filter element (3); the peripheral surface of the connection gland (4) and an inner wall of the filter element housing body (1) are subjected to liquid sealing and matched with the PP cotton head (5) and the PP cotton filter element (2) to form a water inlet chamber (A) and a primary filter chamber (B) that are communicated with the water inlet sub-channel; the filter element housing cover (12) is provided with a self-closing filter element connection seat (9) which has a water inlet connector (9a) and a water outlet connector (9b); and the water inlet connector (9a) and the water outlet connector (9b) are in ejection connection with and are communicated with the water inlet sub-channel and the water outlet sub-channel respectively after opening.

Description

 Composite filter core and its socket

Technical extinction

 The present invention relates to a water purification device, particularly a water purification filter for filtering raw water in a water purification device, and more particularly to a composite filter element and a socket thereof.

Background technique

 The water purification equipment mainly filters and purifies the raw water to remove harmful substances such as suspended solids, sediment, rust, residual chlorine, and heterochromatic odor in the raw water, thereby producing high-quality drinking water that meets human health standards. In the water purification equipment, there is often a combined filter unit for filtering raw water, which increases the filtration level by increasing the filtration level. In the prior art, when the PP cotton filter element and the activated carbon filter element are used at the same time, two kinds of filter elements are generally used in series, and the two kinds of filter elements are used in series, which not only has complicated connection and installation, but also takes up a large space and is difficult to be miniaturized. At present, there are also two types of filter elements combined, that is, PP cotton is composited on the outer layer of activated carbon to make a composite filter element. The composite filter element has a complicated manufacturing process and a large diameter, and is also difficult to miniaturize. Therefore, if the two filter elements can be combined and the overall structure is reasonable and small, the connection and assembly are easy, the trouble of user replacement can be greatly reduced, and the small water purification equipment suitable for people's homes can be more easily produced.

Summary of the invention

 The technical problem to be solved by the present invention is to provide a composite filter core and a socket thereof which have reasonable structure, small volume, low cost, good filtering effect, convenient disassembly and connection, and the like.

 The technical solution adopted by the present invention to solve the above technical problems is as follows: A composite filter element and a socket thereof, comprising a filter cartridge shell composed of a cylindrical filter cartridge shell and a filter cartridge cover which are open at one end, and the filter cartridge housing is provided with upper and lower settings The PP cotton filter and the activated carbon filter are connected in series, and the connection between the PP cotton filter and the activated carbon filter is separated by a connection gland having a water inlet, and the PP cotton filter has a PP cotton cap at the upper end, the PP The cotton head is connected with a filter diverter which is fixedly installed in the filter shell cover and has a water inlet flow channel and a water outlet flow channel respectively. The bottom wall of the filter cartridge housing has a positioning bracket capable of serving as a reinforcing rib, and the positioning bracket is seated thereon. The utility model has a partition plate matched with the activated carbon filter core and having a water drain port, and a water purification chamber is formed between the partition plate and the bottom wall of the filter cartridge shell, and the center of the PP cotton filter core and the activated carbon filter core is axially connected for connecting the filter element The water purifying pipe of the water outlet flow channel and the clean water chamber of the splitter is connected with the inner surface of the gland and the inner wall of the filter casing, and is matched with the PP cotton head and the PP cotton filter to form a connecting filter diverter with an outer ring. The inlet chamber of the water flow channel and the primary filtration chamber of the inner ring, the filter housing cover spiral is equipped with a self-closing filter connector with a water inlet port and a water outlet port, and the inlet port and the outlet port are respectively connected with the filter element The inlet flow passage of the splitter is connected to the outlet passage of the outlet water passage.

In order to optimize the above technical solutions, the measures taken include: - the above-mentioned PP cotton heads are respectively provided with an annular concave card slot matched with the PP cotton filter seal positioning card and a sealing end on the first-stage filter chamber and extending upwards with a ring shape a cylindrical cavity of the boss, the end face of the annular boss is formed with a water guiding protrusion with a water guiding through hole, the water guiding protrusion is formed with a lower connecting protrusion and a protruding annular boss extending into the cylindrical cavity An upper connecting end of the end surface, the upper end of the water purification pipe is inserted into the water guiding through hole of the water guiding protrusion, the water guiding through hole is connected with the water outlet passage of the filter diverter, and the lower connecting protrusion is formed a ring seal groove is mounted in the inner ring seal groove with a first seal ring that is sealingly fitted with the peripheral surface of the water purification pipe, and the water purification pipe set is provided with a sealing cover that is sealingly fitted with the lower connection boss cover. The above-mentioned filter core splitter is respectively provided with an inner ring insertion protrusion on the upper side and an outer ring insertion protrusion which surrounds the inner ring insertion protrusion and has a low height and an inner ring insertion protrusion, and an inner ring insertion sleeve located below The protruding nozzle and the outer ring inserting nozzle protruding around the inner ring insert sleeve and having a lower elongation than the inner ring inserting sleeve, the axial water hole and the filter core shunting formed by the inner ring inserting nozzle The utility model comprises a radial splitting channel connected to the water inlet chamber, wherein the water flow channel is formed by an annular groove formed by the outer ring insertion nozzle and the inner ring insertion protrusion, and a cylindrical groove of the inner ring insertion sleeve protrusion The cavity and the intermediate connecting water channel connecting the annular groove cavity and the cylindrical groove cavity, the outer circumference of the upper connecting protrusion of the PP cotton head and the outer circumference of the annular boss are respectively installed with the sealing structure of the cylindrical groove cavity wall and the annular groove cavity wall. The second seal ring T2 and the third seal ring T3.

 The filter cartridge cover has an annular edge covering the upper end surface of the filter cartridge shell and a positioning surface cooperated with the upper end surface of the filter cartridge shell, and the filter core splitter is fixedly mounted in the assembly cavity of the filter cartridge cover, and the assembly is disposed in the cavity An internal threaded protrusion is formed, and a circumferential surface of the outer ring insertion protrusion of the filter diverter is provided with an externally threaded groove spirally mounted with the internal thread protrusion, and the outer ring insertion protrusion is located on the externally threaded groove The lower sleeve is provided with a fourth sealing ring that is in fluid tight engagement with the central portion of the filter cartridge cover assembly.

 The filter connector base comprises a lower connector coupled to the cartridge cover and an upper connector integrally connected to the lower connector, the lower connector is provided with a threaded notch, and the filter case cover is formed with the screw groove The external threaded protrusion is fitted, and the seventh sealing ring is arranged on the filter shell cover above the external threaded protrusion and is sealed with the inner wall of the lower connecting body, and the lower connecting body is respectively formed with the inner side of the filter diverter The inner ring inlet cavity and the outer ring water outlet cavity are connected to the inner ring insertion nozzle and the outer ring insertion nozzle, and the inner ring insertion protrusion is provided with a sixth seal which is sealed with the inner wall of the inner ring inlet cavity. a fifth sealing ring is arranged on the outer ring inserting nozzle on the outer thread groove, and is provided with a liquid sealing joint with the outer wall of the outer ring water outlet cavity, and the water inlet interface and the water outlet interface are all disposed on the upper connecting body, The inlet body has an inlet valve passage connecting the inlet inlet port and the inner ring inlet chamber, and a outlet valve passage connecting the outlet port and the outer ring outlet chamber.

 The upper end surface of the upper connecting body has a concave bonnet cavity, and the inlet valve passage and the outlet valve passage extend longitudinally through the bonnet cavity, and the inlet valve passage and the outlet valve passage respectively pass through the bonnet cavity The self-closing inlet valve assembly and the outlet valve assembly are equipped, and the sealing cover of the bonnet cavity is provided with a valve cover, and the lower peripheral surface of the lower connecting body is symmetrically formed with two connecting ears for convenient external mounting.

 The inlet valve assembly includes an inlet valve core and an inlet valve spring and a water inlet valve plug which are sequentially fitted on the valve stem of the inlet valve core; the two ends of the inlet valve spring are respectively formed with the inlet valve core The spring seat and the inlet valve plug are connected to each other, and the lower valve stem of the inlet valve core is provided with an eighth sealing ring; the outlet valve assembly includes a water outlet valve core and a water outlet which is sequentially fitted on the valve stem of the water outlet valve core Valve spring and outlet valve plug, the two ends of the outlet valve spring are respectively connected with the spring seat and the outlet valve plug of the outlet valve core, and the lower valve stem of the outlet valve core is provided with a ninth sealing ring, the inlet valve The lower end surface of the lower valve stem of the core cooperates with the top ring insertion nozzle, and the lower end surface of the lower valve stem of the outlet valve core cooperates with the abutting body formed in the annular groove cavity.

 The connecting gland is provided with an annular recessed card slot which is sealed and positioned with the lower end of the damper filter element, and a tenth sealing ring which is sealed with the inner wall of the filter cartridge shell is embedded on the circumferential surface of the connecting gland, and the gland is connected. The center is provided with a fitting hole through which the water purification pipe is disposed, and the water connection port connecting the gland is located at the inner circumference of the annular concave groove and evenly distributed around the through hole, and the bottom pad of the water inlet is provided with an anti-carbon filter. The activated carbon is scattered on the upper nonwoven layer.

The bottom of the partition plate is provided with a lower through hole at the lower end of the water purification pipe, and the lower end surface of the partition plate is formed with a positioning bead surrounding the lower through hole, and the periphery of the partition extends downward with a positioning flange, the water outlet. In order to form four fan-shaped nozzles on the partition, the upper spacer is provided with a lower nonwoven layer. The positioning brackets respectively have an outer bayonet and an inner bayonet that are engaged with the positioning bead of the baffle and the positioning flange, and the positioning bracket is provided with a lower supporting platform that cooperates with the water purifying pipe support, the filter core A filter handle for easy rotation is provided on the bottom end face of the case.

 Compared with the prior art, the filter cartridge housing of the present invention is equipped with a PP cotton filter core and a activated carbon filter core which are connected in series and connected, and two filter cartridges with different functions are assembled in a filter cartridge casing by serial connection, which changes the tradition. The combination of the two filter core sets or the two filter elements in series greatly reduces the overall diameter of the conventional filter element, and effectively solves the problems of large volume of the conventional filter element and difficulty in connection and assembly. At the same time, the invention is equipped with a filter connector having a water inlet port and a water outlet connector, and the filter cartridge connector realizes a simple connection of the conventional complicated water passage by assembling with the filter cartridge cover and the filter core splitter. The invention has the advantages of compact structure, small volume, light weight, high filtering effect, and a filter element with two functions in one filter housing, which has lower filtering cost, less supporting equipment and space saving. It is conducive to the miniaturization of water purification equipment.

DRAWINGS

 Figure 1 is a partially exploded perspective view of the present invention;

 Figure 2 is a schematic exploded half-sectional view of the filter cartridge of Figure 1;

 Figure 3 is a schematic plan view of the present invention;

 Figure 4 is a cross-sectional structural view taken along line A-A of Figure 3;

 Figure 5 is a partial enlarged view of the outside of K in Figure 4;

 Figure 6 is a perspective view of a three-dimensional half-section of the filter cartridge connector of the present invention after removing the internal valve block;

 Figure 7 is a perspective view showing the three-dimensional half-section of the filter element splitter of Figure 4;

 Figure 8 is a perspective view showing the three-dimensional half-section of the PP cotton head of Figure 4;

 Figure 9 is a perspective view, partly in section, of the connecting gland of Figure 4;

 Figure 10 is a perspective view, partly in section, of the partition of Figure 4;

detailed description

 Embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

 1 to 10 are schematic views showing the structure of the present invention.

The reference numerals are as follows: water inlet chamber VIII, primary filtration chamber B, water purification chamber 0, first sealing ring Π, second sealing ring Τ 2, third sealing ring Τ 3, fourth sealing ring Τ 4, The fifth sealing ring Τ5, the sixth sealing ring Τ6, the seventh sealing ring Τ7, the eighth sealing ring Τ8, the ninth sealing ring Τ9, the tenth sealing ring Π0, the filter housing 1, the filter housing 11, the filter handle l la, The filter cartridge cover 12, the assembly through cavity 12a, the internal thread projection 12b, the externally threaded projection 12c, the annular edge 121, the positioning table 122, the positioning bracket 13, the lower support table 13a, the outer card opening 13b, the inner bayonet 13c, PP Cotton filter element 2, activated carbon filter element 3, connecting gland 4, water-passing port 4a, annular recessed card slot 4b, piercing hole 4c, upper non-woven fabric layer 41, PP cotton head 5, annular upper recessed card slot 5a, column The cavity 5b, the water guiding through hole 5c, the annular boss 51, the lower connecting protrusion 52, the upper connecting protrusion 53, the filter core splitter 6, the radial branching channel 6a, the inner ring inserting projection 61, the axial water Hole 61a, outer ring insertion boss 62, annular groove cavity 62a, externally threaded groove 62b, inner ring socket projection 63, cylindrical groove cavity 63a, outer ring a sleeve nozzle 64, a partition plate 7, a water outlet 7a, a lower through hole 7b, a positioning bead 7c, a positioning flange 7d, a lower nonwoven layer 71, a water purification pipe 8, a sealing cover 81, a filter connector 9, Inlet port 9a, outlet port %, lower connector 91, inner ring inlet chamber 91a, outer ring outlet chamber 91b, threaded slot 91c, connecting lug 91d, upper connecting body 92, inlet valve passage 92a, outlet valve Channel 92b, bonnet cavity 92c, bonnet 93, inlet valve assembly 94, inlet valve The core 941, the water inlet valve spring 942, the water inlet valve plug 943, the water outlet valve assembly 95, the water outlet valve core 951, the water outlet valve spring 952, and the water outlet valve plug 953.

 As shown in FIG. 1 to FIG. 10, a composite filter element and a socket thereof of the present invention comprise a filter cartridge housing 1 composed of a cylindrical filter cartridge shell 11 and an element cartridge cover 12 which are open at one end, wherein: the cartridge housing 1 is The PP cotton filter element 2 and the activated carbon filter element 3 are arranged in series and connected in series, and the connection between the PP cotton filter element 2 and the activated carbon filter element 3 is separated by a connection gland 4 made of a water outlet 4a, PP cotton. The upper end of the filter element 2 is sleeved with a PP cotton head 5, and the PP cotton head 5 is connected with a filter core splitter 6 fixedly installed in the filter cartridge cover 12 and having a water inlet flow path and a water outlet flow path, respectively, and a bottom wall of the filter element housing 1 In the previous system, there is a positioning bracket 13 which can serve as a reinforcing rib. The positioning bracket 13 is provided with a partition 7 supported by the activated carbon filter element 3 and having a water outlet 7a. The partition wall 7 and the bottom wall of the filter housing 1 are interposed. The water purification chamber D is formed, and the central axis of the PP cotton filter element 2 and the activated carbon filter element 3 is axially provided with a water purification conduit 8 for communicating the water outlet passage and the clean water chamber D of the filter core splitter 6 to connect the gland 4 The circumferential surface is sealed with the inner wall of the filter housing 1 and is matched with a PP cotton head. 5 and PP cotton filter 2 formed with an outer ring of the connecting filter splitter 6 into the water inlet channel A and the inner ring of the primary filter chamber B, the filter shell cover 12 is equipped with a water inlet interface 9a and the water outlet interface % of the self-closing filter connector 9, the water inlet port 9a and the water outlet port % are respectively connected to the inlet and outlet channels of the filter diverter 6 . As can be clearly seen from FIG. 4, the present invention is equipped with a filter element of two different filtering functions of a PP cotton filter 2 and an activated carbon filter 3 in a series of composites in the filter housing 1 , and the two filters pass through the purified water. The fixed installation of the conduit 8 constitutes a series-type composite filter element, which effectively solves the problem that the traditional filter core set has a large composite diameter, can not be miniaturized or adopts two kinds of filter elements in series to occupy a space and complicated pipeline connection, resulting in water purification equipment. The problem of bulky and costly. And the filter housing 1 is equipped with a self-closing filter connector 9, the water inlet port 9a of the filter connector 9 and the water outlet interface are closed when not installed, only when the filter connector 9 and the filter diverter 6 are equipped After being put into position, through the top connection of the filter diverter 6, the water inlet interface 9a and the water outlet interface % can be respectively connected with the inlet water flow channel and the water outlet flow channel, so that the invention not only installs the connection more concisely, but also extracts or replaces the filter element. When the series-connected composite filter element in the casing 1 is also automatically closed due to the separation of the filter element connecting seat 9 and the filter element splitter 6, the problem that the conventional water purifying equipment replaces the filter element needs to disconnect the water source is also solved. The series-connected composite and filter connector 9 not only makes the product compact, compact, and has a better filtering effect, but also greatly reduces the difficulty of the customer's assembly, making the water purification equipment require fewer matching fittings, thereby reducing The overall volume and manufacturing cost of the water purification equipment realizes miniaturization of the water purification equipment.

 As shown in FIG. 8 and referring to FIG. 5, the PP cotton heads 5 are respectively formed with an annular upper concave card groove 5a which is fitted and fitted with the PP cotton filter element 2, and a sealing end which constitutes a first-stage filtering chamber B and has a ring shape extending upward. The cylindrical cavity 5b of the boss 51, the end surface of the annular boss 51 is formed with a water guiding protrusion with a water guiding through hole 5c, and the water guiding protrusion is formed with a lower connecting protrusion extending into the cylindrical cavity 5b. 52 and an upper connecting protrusion 53 protruding from the end surface of the annular boss 51, the upper end of the water purification pipe 8 is inserted into the water guiding through hole 5c of the water guiding protrusion, the water discharging through hole 5c and the water outlet of the filter diverter 6 The lower connecting nozzles are connected to each other, and the lower connecting protrusions 52 are formed with an inner ring sealing groove, and the inner ring sealing groove is provided with a first sealing ring 密封 which is sealingly fitted with the circumferential surface of the water purification pipe 8, and the water purification pipe 8 is provided with a set The lower connecting protrusion 52 is sleeve-sealed with a sealing cover 81. The ΡΡ cotton head 5 pairs of ΡΡ cotton filter 2 and water purification pipe 8 have a positioning effect.

As shown in FIG. 7 and in conjunction with FIG. 5, in the embodiment, the filter element splitter 6 is respectively provided with an inner ring insertion protrusion 61 and an inner ring insertion protrusion 61 and a low height and an inner ring insertion protrusion 61. The outer ring inserting projection 62 and the lower inner ring inserting projection 63 and the outer ring inserting the inner ring inserting projection 63 and having a lower elongation greater than the inner ring inserting projection 63 The sleeve nozzle 64, the water inlet passage is composed of an axial water hole 61a formed by the inner ring insertion protrusion 61 and a radial branching channel 6a connected to the water inlet chamber A formed by the filter core splitter 6, and the water flow is discharged. The annular groove cavity 62a formed by the outer ring insertion projection 62 and the inner ring insertion projection 61 and the cylindrical groove cavity 63a of the inner ring insertion boss 63 and the annular groove cavity 62a and the cylindrical groove cavity 63a are connected. The intermediate connecting water channel is composed, and the outer circumference of the upper connecting protrusion 53 of the PP cotton head 5 and the outer circumference of the annular boss 51 are respectively mounted with a second sealing ring T2 and a sealing joint with the cavity wall of the cylindrical groove cavity 63a and the cavity wall of the annular groove cavity 62a. Three sealing ring T3. The filter splitter 6 acts as a split, and the filter splitter 6 achieves the effect of splitting through the internal water passage.

 In the embodiment, as shown in FIG. 2 and FIG. 7, the filter cartridge cover 12 is formed with an annular side 121 covering the peripheral surface of the upper end of the filter cartridge housing 11 and a positioning surface 122 correspondingly positioned with the upper end surface of the filter cartridge housing 11, and the filter core splitter 6 is fixed. The assembly through cavity 12a is fitted with a female threaded projection 12b. The outer peripheral surface of the outer filter inserting projection 62 is formed with a female threaded projection 12b. 12b spirally mounted externally threaded groove 62b, and the outer ring inserting projection 62 is disposed under the externally threaded groove 62b with a fourth sealing ring which is in fluid-tight contact with the central portion of the filter cartridge cover 12 fitting through cavity 12a. T4.

 Referring to FIG. 5 and FIG. 6, the filter connector 9 includes a lower connector 91 coupled to the cartridge housing cover 12 and an upper connector 92 integrally connected to the lower connector 91. The lower connector 91 has a threaded notch. 91c, the filter cartridge cover 12 is provided with an externally threaded protrusion 12c spirally fitted with the threaded notch 91c, and the filter cartridge cover 12 is provided with a liquid-tight sealing fit with the inner wall of the lower connecting body 91 above the externally threaded projection 12c. The seven seal ring T7, the lower joint body 91 is formed with an inner ring inlet cavity 91a and an outer ring outlet water respectively connected to the inner ring insertion projection 61 and the outer ring insertion projection 62 of the filter diverter 6. The cavity 91b, the inner ring insertion protrusion 61 is provided with a sixth sealing ring T6 which is in liquid-tight sealing engagement with the inner wall inlet cavity 91a, and the outer ring insertion protrusion 62 is disposed above the externally threaded groove 62b. The fifth sealing ring T5, which is in fluid-tight connection with the outer wall of the outer ring water outlet chamber 91b, is provided on the upper connecting body 92, and the upper connecting body 92 is respectively provided with the communicating water inlet port 9a and the inner portion. Inlet valve passage 92a of the inlet water chamber 91a and the outlet water outlet And the outer ring 91b of the valve chamber outlet channel 92b.

 Referring to FIG. 6, the upper end surface of the upper connecting body 92 is formed with a concave bonnet cavity 92c, and both the inlet valve passage 92a and the outlet valve passage 92b extend longitudinally through the bonnet cavity 92c, and the inlet valve passage 92a A self-closing inlet valve assembly 94 and a water outlet valve assembly 95 are disposed in the outlet valve passage 92b via the bonnet chamber 92c, and the sealing cover is provided with a valve cover 93 in the bonnet chamber 92c, and the lower circumference of the lower connecting body 91 is provided. The surface symmetry has two connecting lugs 91d which are convenient for external mounting. Both the inlet valve passage 92a and the outlet valve passage 92b penetrate the bonnet chamber 92c for the convenience of fitting the inlet valve assembly 94 and the outlet valve assembly 95, thereby reducing the difficulty in installing the valve and also facilitating replacement and maintenance. The filter connector 9 The self-closing state when not installed is achieved by a valve fitted inside.

In the embodiment, as shown in FIG. 5, the inlet valve assembly 94 includes a water inlet valve core 941 and a water inlet valve spring 942 and a water inlet valve plug 943 which are sequentially fitted on the valve stem of the water inlet valve core 941; The two ends of the spring 942 are respectively connected with the spring seat and the inlet valve plug 943 of the inlet valve core 941, and the lower valve stem of the inlet valve core 941 is provided with an eighth sealing ring T8; the water outlet valve assembly 95 The water outlet valve core 951 and the water outlet valve spring 952 and the water outlet valve plug 953 which are respectively disposed on the valve stem of the water discharge valve core 951, the two ends of the water outlet valve spring 952 and the spring seat and the outlet valve respectively formed by the water outlet valve core 951 The plug 953 is spliced, and the lower valve stem of the outlet valve core 951 is provided with a ninth sealing ring T9, and the lower end surface of the lower valve stem of the inlet valve core 941 is matched with the inner ring insertion projection 61, and the outlet valve The lower end surface of the lower stem of the core 951 cooperates with the abutment formed in the annular groove 62a. After the filter cartridge connecting seat 9 is assembled, the water inlet valve core 941 and the water outlet valve core 951 are respectively pressed upwardly to open the water passage in the filter element connecting seat 9, and the water inlet valve core is not installed. The 941 and the water discharge valve core 951 close the valve passage by the inlet valve spring 942 and the outlet valve spring 952, respectively, thereby blocking the communication of the water passage.

 As shown in FIG. 9, the connecting gland 4 is provided with an annular recessed card slot 4b which is sealed and positioned with the lower end of the PP cotton filter element 2, and the peripheral surface of the connecting gland 4 is nested with a liquid sealing fit with the inner wall of the filter cartridge housing 11. The tenth sealing ring Π0, the center of the connecting gland 4 is provided with a fitting hole 4c through which the water purifying pipe 8 is disposed, and the water-passing port 4a of the connecting gland 4 is located at the inner circumference of the annular recessed card slot 4b and surrounds the fitting hole 4c is evenly distributed, and the bottom pad of the water inlet 4a is provided with an upper nonwoven fabric layer 41 for preventing the active carbon in the activated carbon filter element 3 from leaking.

 In the embodiment, as shown in FIG. 10, the bottom of the partition plate 7 is provided with a lower through hole 7b through which the lower end of the water purification pipe 8 is bored, and the lower end surface of the partition plate 7 is formed with a positioning bead 7c surrounding the lower through hole 7b. A positioning flange 7d is formed downwardly around the periphery of the partition plate 7. The water discharge port 7a is four fan-shaped nozzles formed by arcs on the partition plate 7, and the partition plate 7 is provided with a lower nonwoven fabric layer 71.

 As shown in FIG. 2, the positioning bracket 13 is respectively provided with an outer bayonet 13b and an inner bayonet 13c which are positioned and engaged with the positioning bead 7c of the partition 7 and the positioning flange 7d, and the positioning bracket 13 is provided with a water purifying pipe. 8 Supporting the lower support table 13a, the bottom end surface of the filter cartridge housing 11 is provided with a filter handle la la for convenient rotation.

 As shown in Fig. 4, when the present invention is in normal operation, the water flow of the raw water enters through the water inlet port 9a of the filter element connector 9, and sequentially passes through the inlet valve assembly 94, the inlet valve passage 92a, the inner ring inlet chamber 91a, and the filter element. The axial water hole 61a and the radial flow dividing channel 6a of the flow divider 6 enter the water inlet chamber A, and the raw water is filtered by the PP cotton filter element 2 and then enters the primary filtration chamber B, and then the filtered filtered water passes through the connection gland 4 The water inlet 4a and the upper nonwoven layer 41 enter the activated carbon filter element 3, and are filtered by the activated carbon filter element 3 to form more pure purified water, and enter the water purification chamber D through the water discharge port 7a of the separator 7 and the lower nonwoven fabric layer 71. And then from the water purification conduit 8, the water guiding through hole 5c of the PP cotton head 5, and the cylindrical groove chamber 63a of the filter element splitter 6, the intermediate connecting water passage and the annular groove chamber 62a into the outer ring water outlet chamber 91b of the filter element connecting seat 9. Then, through the outlet valve passage 92b and the outlet valve assembly 95, the outlet port of the filter connector 9 is finally discharged, thereby realizing the function of purifying water of the whole machine.

Claims

claims 1. A composite filter element and its socket, including a filter element shell (1) composed of a cylindrical filter element shell (11) with one end open and a filter element shell cover (12), characterized by: the filter element shell (1) 1) is equipped with a PP cotton filter element (2) and an activated carbon filter element (3) that are connected in series up and down, and the PP cotton filter element (2) and the activated carbon filter element (3) are separated in series. The connection gland (4) of the water inlet (4a), the upper end of the PP cotton filter element (2) is clamped with a PP cotton head (5), and the PP cotton head (5) is connected to a fixed installation on the filter element shell cover (12 ) are respectively made with a filter element diverter (6) with an inlet water flow channel and an outlet water flow channel. The bottom wall of the filter element housing (1) is integrally equipped with a positioning bracket (13) that can also serve as a reinforcing rib. This positioning bracket The upper seat of the bracket (13) is provided with a partition (7) that supports and cooperates with the activated carbon filter element (3) and is equipped with a drain outlet (7a). The space between the partition (7) and the bottom wall of the filter element housing (1) A water purification chamber (D) is formed, and the PP cotton filter element (2) and the activated carbon filter element (3) are axially pierced with a water outlet channel for connecting the filter element diverter (6) and the water purification chamber ( D) of the water purification conduit (8), the peripheral surface of the connecting gland (4) is liquid-sealed with the inner wall of the filter element housing (1) and cooperates with the PP cotton head (5) and the PP cotton filter element (2) to form an outer The water inlet chamber (A) of the inlet water shunt of the ring is connected to the filter element diverter (6) and the primary filter chamber (B) of the inner ring. The filter element shell cover (12) is spirally equipped with an inlet system. The self-closing filter element connection seat (9) of the water interface (9a) and the water outlet interface (9b), the water inlet interface (9a) and the water outlet interface (9b) are respectively connected with the inlet water shunt of the filter element diverter (6) It is connected to the top connection opening of the outlet water flow channel. 2. A composite filter element and its socket according to claim 1, characterized by: the PP cotton heads (5) are respectively made with annular concave fittings that seal and position the PP cotton filter element (2). The clamping groove (5a) and the cylindrical cavity (5b) constitute the upper sealing end of the primary filter chamber (B) and extend upward with an annular boss (51). The end face center of the annular boss (51) is formed with a belt. There is a water-conducting convex column with a water-conducting through hole (5c). The water-conducting convex column is formed with a lower connection protrusion (52) extending into the cylindrical cavity (5b) and an upper connection protruding from the end face of the annular boss (51). The protruding nozzle (53), the upper end of the water purification conduit (8) is inserted into the water conduction through hole (5c) of the water conduction protrusion, and the water conduction through hole (5c) is connected to the filter element diverter (6) The outlet water flow channels are connected, and the lower connecting nozzle (52) is equipped with an inner ring sealing groove. A first sealing ring (Π) that seals with the peripheral surface of the water purification conduit (8) is installed in the inner ring sealing groove. ), and the water purification conduit (8) set is additionally provided with a sealing cover (81) that seals with the lower connecting nozzle (52) cover. 3. A composite filter element and its socket according to claim 2, characterized in that: the filter element diverter (6) is respectively equipped with an inner ring plug-in protrusion (61) located above and a surrounding inner ring. The insertion protrusion (61) is low in height, the outer ring insertion protrusion (62) of the inner ring insertion protrusion (61), the inner ring insertion sleeve protrusion (63) located below and the surrounding inner ring insertion sleeve protrusion The nozzle (63) and the downward extension length are larger than the outer ring sleeve protrusion (64) of the inner ring sleeve protrusion (63). The inlet water diverging channel is made of a shaft made of the inner ring sleeve protrusion (61). The water inlet hole (61a) and the radial shunt channel (6a) connected to the water inlet chamber (A) are formed in the filter element shunt (6). The outlet water shunt channel is composed of an outer ring plug-in protrusion (62). ) and the annular groove (62a) formed by the inner ring inserting protrusion (61) and the cylindrical groove (63a) of the inner ring inserting protrusion (63) and connecting the annular groove (62a) and the cylindrical groove (63a) is composed of an intermediate connecting water channel. The outer periphery of the upper connecting protrusion (53) and the annular boss (51) of the PP cotton head (5) are respectively installed with the cylindrical groove cavity (63a) cavity wall and annular boss (51). The second sealing ring (T2) and the third sealing ring (T3) are sealingly matched with the cavity wall of the groove cavity (62a). 4. A composite filter element and its socket according to claim 3, characterized in that: the filter element shell cover (12) is made with an annular edge (121) covering the upper end circumferential surface of the filter element shell (11) and The positioning table (122) is positioned and matched with the upper end surface of the filter element shell (11). The filter element diverter (6) is fixedly installed in the assembly through cavity (12a) of the filter element shell cover (12). This assembly The through cavity (12a) is provided with an internal thread protrusion (12b), and the outer ring plug-in protrusion (62) of the filter element diverter (6) is provided with an internal thread protrusion (12b) for spiral installation. The external thread groove (62b), and the outer ring plug-in protrusion (62) is located below the external thread groove (62b) and is equipped with a liquid in the middle of the assembly cavity (12a) of the filter element shell cover (12). Sealing fit fourth sealing ring (T4). 5. A composite filter element and its socket according to claim 4, characterized in that: the filter element connection socket (9) includes a lower connector (91) connected to the filter element shell cover (12) and a The upper connecting body (92) is integrally connected with the lower connecting body (91). The lower connecting body (91) is made with a threaded notch (91c), and the filter element shell cover (12) is made with a threaded slot. The groove (91c) is spirally fitted with an externally threaded protrusion (12c), and the filter element shell cover (12) is provided with a seventh element that is liquid-tightly matched with the inner wall of the lower connecting body (91) and is located above the externally threaded protrusion (12c). Sealing ring (T7), the middle ring of the lower connecting body (91) is sleeve-shaped with the inner ring plug-in protrusion (61) and the outer ring plug-in protrusion (62) of the filter element diverter (6). The inner ring water inlet chamber (91a) and the outer ring water outlet chamber (91b) are connected, and the inner ring plug-in protrusion (61) is equipped with a sixth member that is liquid-tightly matched with the peripheral wall of the inner ring water inlet chamber (91a). Sealing ring (T6), the outer ring plug-in protrusion (62) is located above the external thread groove (62b) and is equipped with a fifth sealing ring (T6) that is liquid-tightly matched with the peripheral wall of the outer ring water outlet chamber (91b). T5), the water inlet interface (9a) and the water outlet interface (9b) are both arranged on the upper connector (92), and the upper connector (92) is respectively equipped with a connected water inlet interface (9a) and an inner ring. The water inlet valve passage (92a) of the water inlet chamber (91a) and the water outlet valve passage (92b) connecting the water outlet interface (9b) and the outer ring water outlet chamber (91b). 6. A composite filter element and its socket according to claim 5, characterized in that: the upper end surface of the upper connecting body (92) is formed with a concave valve cover cavity (92c), and the inlet The water valve channel (92a) and the water outlet valve channel (92b) both longitudinally penetrate the valve cover cavity (92c), and the water inlet valve channel (92a) and the water outlet valve channel (92b) pass through the valve cover cavity (92c) respectively. It is equipped with a self-closing water inlet valve assembly (94) and a water outlet valve assembly (95). The sealing cover in the valve cover cavity (92c) is equipped with a valve cover (93), and the lower connecting body (92c) The lower peripheral surface of 91) is symmetrically provided with two connecting lugs (91d) for convenient external installation and fixation. 7. A composite filter element and its socket according to claim 6, characterized in that: the water inlet valve assembly (94) includes a water inlet valve core (941) and is sequentially sleeved on the water inlet valve core (941). The water inlet valve spring (942) and the water inlet valve plug (943) on the upper valve stem of 941); the two ends of the water inlet valve spring (942) are respectively connected with the spring seats made of the water inlet valve core (941) It is in contact with the water inlet valve plug (943), and the lower valve stem of the water inlet valve core (941) is equipped with an eighth sealing ring (T8); the water outlet valve assembly (95) includes a water outlet valve core (951) and the outlet valve spring (952) and outlet valve plug (953) which are successively set on the valve stem of the outlet valve core (951). The two ends of the outlet valve spring (952) are respectively connected with the outlet valve. The spring seat made of the core (951) is in contact with the outlet valve plug (953), and a ninth sealing ring (T9) is installed on the lower valve stem of the outlet valve core (951). The water inlet The lower end surface of the lower valve stem of the valve core (941) is in top contact with the inner ring plug-in protrusion (61), and the lower end surface of the lower valve stem of the water outlet valve core (951) is in contact with the annular groove cavity (62a). Some acrosomes match. 8. A composite filter element and its socket according to claim 7, characterized by: the connection gland (4) is made with an annular concave card that is sealed and positioned with the lower end of the PP cotton filter element (2) groove (4b), and a tenth sealing ring (Π0) that is liquid-tightly matched with the inner wall of the filter shell (11) is nested on the peripheral surface of the connecting gland (4). The center of the connecting gland (4) is The water purification conduit (8) has a through hole (4c), and the water inlet (4a) connecting the gland (4) is located on the inner periphery of the annular concave groove (4b) and surrounds the through hole (4c). Evenly distributed, the bottom pad of the water outlet (4a) is equipped with an upper non-woven layer (41) to prevent the activated carbon in the activated carbon filter element (3) from leaking. 9. A composite filter element and its socket according to claim 8, characterized in that: the center of the partition plate (7) is formed with a lower through hole (7b) passed through the lower end of the water purification conduit (8). ; The drains (7a) are four fan-shaped drains with equal arcs on the partition (7), and the partition (7) is padded with a lower non-woven fabric layer (71). 10. A composite filter element and its socket according to claim 9, characterized in that: the positioning bracket (13) is respectively made with a positioning convex ring (7c) and a positioning convex edge for the partition (7) (7d) Position the outer bayonet (13b) and the inner bayonet (13c), and the positioning bracket (13) is equipped with a lower support platform (13a) that supports and cooperates with the water purification conduit (8). The filter element The bottom end face of the shell (11) is equipped with a filter element handle (11a) for easy rotation and assembly.