CN217757075U - All-in-one filter element - Google Patents

Abstract

The utility model provides an all-in-one filter element, which comprises a shell, wherein a central tube and a second filter part arranged around the central tube are arranged in the shell, a third filter part is arranged above the central tube, and a first filter part is arranged below the central tube; a first connecting piece is arranged between the third filtering part and the second filtering part to form waterway connection, and a second connecting piece is arranged between the second filtering part and the first filtering part to form waterway connection; a first water channel, a second water channel and a third water channel are arranged on the shell, and water flows from the first water channel to the water inlet side of the second filtering part along the first water channel, the first filtering part and the first connecting piece to form a first water flow channel; the water flows along the second filtering part, the central pipe, the third filtering part and the third waterway port to form a second water flow channel; and water flows from the water discharging side of the second filtering part to the second water channel port to form a third water flow channel. The all-in-one filter element has the advantages of compact structure, small occupied volume and smooth water path trend.

Description

All-in-one filter element

Technical Field

This scheme relates to water filtration technical field, specifically is many unification filter cores.

Background

In recent years, water purifiers are popularized, the updating and upgrading pace of products is accelerated, the industry technology is continuously improved, the water purifying effect of the water purifier generally depends on a filter element, and the filter element enables polluted water to be cleaned to a state required by production and life. Current filtration system is generally assembled by many filter cores and is used to realize making the multiple stage filtration function, and nevertheless many filter cores are assembled and will lead to whole filtration system volume all to be bigger than normal, need occupy a lot of spaces, lead to the mounted position of consumer's family to adorn not to get off the water purifier.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide the filter core of unifying more for overcoming prior art's not enough, in order to solve the problem that multistage filter core volume is big on the left and right sides, occupation space is many, and this filter core of unifying more compact structure occupies smallly, and the water route moves towards smoothly.

The all-in-one filter element comprises a shell, wherein a central pipe and a second filtering part surrounding the central pipe are arranged in the shell, a third filtering part is arranged above the central pipe, and a first filtering part is arranged below the central pipe; a first connecting piece is arranged between the third filtering part and the second filtering part to form waterway connection, and a second connecting piece is arranged between the second filtering part and the first filtering part to form waterway connection; the shell is provided with a first water crossing, a second water crossing and a third water crossing,

the water flow flows along the first water channel, the first filtering part and the first connecting piece to the water inlet side of the second filtering part to form a first water flow channel;

the water flows along the second filtering part, the central pipe, the third filtering part and the third waterway port to form a second water flow channel;

and water flows from the water discharging side of the second filtering part to the second water channel port to form a third water flow channel.

The utility model discloses it has the second filter house to wind around the center tube periphery, the third filter house is located the center tube top, the second filter house is located the center tube below, make the third filter house, the second filter house, first filter house sets up from last to layering in proper order down along the axial direction of center tube, through setting up first connecting piece, the second connecting piece is in order to form water path connection, do not set up the filter layer in the center tube, make this filter core compact structure, it is small to occupy, rivers are at the flow in-process, can follow the inside space of center tube and flow to first filter house, under the prerequisite that satisfies the multistage application of filter core, the water path trend is smooth and easy.

Further, the third filter part is independent from the housing, a gap is formed between the third filter part and the housing, and water flows to the first filter part along the first water port and the gap.

Furthermore, the first connecting piece comprises a first base plate, the third filtering part is arranged on the upper side of the first base plate, the third filtering part is sleeved with a first separation cover, the upper end of the first separation cover is communicated with a third water channel, a first space is formed between the first separation cover and the third filtering part, and the second water channel flows through the first space; the first separation cover is sleeved with a second separation cover, the upper end of the second separation cover is communicated with a second water channel port, a second space is formed between the second separation cover and the first separation cover, and the third water channel flows through the second space; the first base plate is provided with a first port used for being communicated with the second water flow channel and a second port used for being communicated with the third water flow channel, and the first port is communicated with the central pipe.

Furthermore, the vertical extension of first base plate upside is provided with the fourth and keeps off the wall, the first base plate upside corresponds the vertical extension in fourth fender wall inboard position is provided with the third and keeps off the wall, keep off the wall in the fourth and set up between second partition cover and the third fender wall, keep off the wall and be formed with the fourth installation cavity that goes up that the upper shed set up on the fourth between the wall and the third, the installation cavity is arranged in the second interval on the fourth, installation cavity and second port intercommunication on the fourth.

Furthermore, the upper side of the first base plate vertically extends to a position corresponding to the inner side of the third upper retaining wall to form a second upper retaining wall, a third upper mounting cavity with an upper opening is formed between the second upper retaining wall and the third upper retaining wall, and one end of the first separation cover is arranged in the third upper mounting cavity.

Further, the first base plate upside corresponds the vertical extension in the inboard position of wall that keeps off on the second is provided with first fender wall, be formed with the installation cavity on the second that the upper shed set up on first fender wall and the second, third filter house one end in the installation cavity sets up on the second, keep off the wall on the first and enclose the first installation cavity that closes to be formed with the upper shed setting, first installation cavity and first opening intercommunication of going up.

Furthermore, in order to ensure the sealing performance, a plurality of first sealing elements are arranged between the third upper retaining wall and the first separation cover; and a plurality of second sealing pieces are arranged between the fourth upper blocking wall and the second separating cover.

Furthermore, a sixth upper blocking wall extends vertically from the lower side of the first base plate, a fifth upper blocking wall extends vertically from the lower side of the first base plate at a position corresponding to the inner side of the sixth upper blocking wall, a sixth upper mounting cavity with a lower opening is formed between the fifth upper blocking wall and the sixth upper blocking wall, the sixth upper mounting cavity is communicated with the second opening, and one end of the second filtering part is arranged in the sixth upper mounting cavity; keep off the wall in the fifth and enclose and close the fifth installation cavity that is formed with the under shed setting, installation cavity and first opening intercommunication in the fifth.

Furthermore, the opening is arranged at the upper end of the central tube, and the central tube, the fifth upper mounting cavity, the first through opening and the first upper mounting cavity are sequentially communicated to form a third water passing space for water flow buffering.

Further, the center tube is sleeved on the outer side wall of the fifth upper baffle wall, the fifth upper mounting cavity is communicated with the center tube, and a plurality of third sealing elements are arranged between the fifth upper baffle wall and the center tube.

Furthermore, the second connecting piece comprises a second base plate, a first lower blocking wall vertically extends from the upper side of the second base plate, a first lower mounting cavity with an upper opening is formed by the first lower blocking wall in a surrounding mode, and the other end of the second filtering part is arranged in the first lower mounting cavity; the vertical extension of second base plate downside has the second to keep off the wall down, the second base plate downside corresponds the vertical extension of second lower fender wall inboard position is provided with the third and keeps off the wall down, keep off the second under wall and the third and be formed with the installation cavity under the second of under the opening setting between the wall, the one end of first filter house in the installation cavity sets up under the second, keep off the wall under the third and enclose and close the installation cavity under the third that is formed with the under opening setting, installation cavity and first installation cavity intercommunication set up under the third.

Further, be provided with the third opening in order to form the intercommunication under first installation cavity and the third between the installation cavity, third opening upside fixed connection is provided with the filter material layer.

Furthermore, a plurality of cushion blocks are arranged on the upper side of the second substrate in the first lower mounting cavity and extend towards the second filter part.

The beneficial effect of this scheme lies in:

1. the utility model discloses it has the second filter house to wind around the center tube periphery, the third filter house is located the center tube top, the second filter house is located the center tube below, make the third filter house, the second filter house, first filter house sets up from last to layering in proper order down along the axial direction of center tube, through setting up first connecting piece, the second connecting piece is in order to form water path connection, do not set up the filter layer in the center tube, make this filter core compact structure, it is small to occupy, rivers are at the flow in-process, can follow the inside space of center tube and flow to first filter house, under the prerequisite that satisfies the multistage application of filter core, the water path trend is smooth and easy.

2. Based on the arrangement and application of the first connecting piece and the second connecting piece, the filter core structure using the filter core structure has the characteristics of stable internal water filtering process, simple water path design, few splicing pieces and simple assembly process.

Drawings

FIG. 1 is a schematic structural diagram of the present embodiment;

FIG. 2 is an enlarged view of FIG. 1 at A;

fig. 3 is a first schematic view of a first connecting member according to the present embodiment;

FIG. 4 is a second schematic view of the first connecting member according to the present embodiment;

FIG. 5 is a first schematic view of a second link according to the present solution;

FIG. 6 is a second schematic view of a second link of the present solution;

description of reference numerals:

<xnotran> 1, 101, 102, 103, 104, 112, 113, 114, 15, 16, 17, 2, 3, 4, PP 41, 42, 5, 51, 6, 61, 62, 63, 611, 612, 613, 614, 615, 616, 64, 65, 601, 602, 603, 604, 605, 606, 607, 608, 7, 71, 711, 712, 713, 72, 73, 74, 75, 76, 77, 8, 9, 10, 11, 12, 13. </xnotran>

Detailed Description

In order to make the technical solutions, objects and advantages thereof more clearly understood, the present invention is further explained below with reference to the accompanying drawings and embodiments.

As shown in fig. 1 to 2, the all-in-one filter element of the present scheme includes a casing 1, the casing 1 includes a filter element shell 101, an upper cover 102 and a lower cover 103, a cavity is formed in the filter element shell 101, an upper opening communicated with the cavity is provided on an upper side of the filter element shell 101, the upper cover 102 forms an installation adaptation corresponding to the upper opening, a lower opening communicated with the cavity is provided on a lower side of the filter element shell 101, and the lower cover 103 forms an installation adaptation corresponding to the lower opening.

The end cover is provided with a first water port 112, a second water port 113 and a third water port 114 which are communicated with the cavity, the cavity is internally provided with a central tube 5 and a second filter part 3 which surrounds the central tube 5, the upper end of the central tube 5 is provided with an opening, the lower end of the central tube is sealed, and the wall of the central tube 5 is provided with a plurality of water through holes 51. A third filtering part 2 is arranged above the central pipe 5, and a first filtering part 4 is arranged below the central pipe 5; in this embodiment, the third filtering portion 2 is a carbon rod filter element; the second filtering part 3 is a reverse osmosis filter element, and the peripheral side of the second filtering part 3 is closed; the first filter part 4 is a filter element with a double-layer filter material structure, and comprises a PP cotton layer 41 and a scale inhibiting carbon rod layer 42, wherein the PP cotton layer 41 can be a folding PP layer or a melt-blown PP cotton layer.

Make third filter house 2, second filter house 3, first filter house 4 from the top down along the axial direction of center tube 5 layering setting in proper order, be provided with first connecting piece 6 between third filter house 2 and the second filter house 3 in order to form water path connection, be provided with second connecting piece 7 between second filter house 3 and the first filter house 4 in order to form water path connection. The third filter part 2 is independent from the housing 1, a gap is formed between the third filter part 2 and the housing 1, and water flows to the first filter part 4 along the first water opening 112 and the gap.

As shown in fig. 3-4, the first connecting member 6 includes a first substrate 61, the third filter part 2 is disposed on the upper side of the first substrate 61, the third filter part 2 is sleeved with a bell-shaped first partition 62, a port communicated with the third water channel 114 is disposed at the upper end of the first partition 62, the lower end of the first partition 62 is open, the upper end of the first partition 62 is communicated with the third water channel 114, a first space 601 is formed between the first partition 62 and the third filter part 2, and the second water channel 9 flows through the first space 601; the first separation cover 62 is sleeved with a bell-shaped second separation cover 63, a through hole communicated with the second water channel 113 is formed in the upper end of the second separation cover 63, the lower end of the second separation cover 63 is provided with an opening, the upper end of the second separation cover 63 is communicated with the second water channel 113, a second distance 602 is formed between the second separation cover 63 and the first separation cover 62, and the third water channel 10 flows through the second distance 602; the first base plate 61 is provided with a first through hole 64 for communicating with the second water flow channel 9 and a second through hole 65 for communicating with the third water flow channel 10, and the first through hole 64 is communicated with the central tube 5. The second partition 63 separates the first water flow path 8 from the third water flow path 10, and the first partition 62 separates the third water flow path 10 from the second water flow path 9. The first separating cover 62 and the second separating cover 63 are both in a bell shape, and both ends of the first separating cover 62 and the second separating cover 63 are open.

A fourth upper retaining wall 614 is vertically extended from the upper side of the first base plate 61, a third upper retaining wall 613 is vertically extended from the inner side of the fourth upper retaining wall 614 on the upper side of the first base plate 61, the fourth upper retaining wall 614 is arranged between the second shield 63 and the third upper retaining wall 613, a fourth upper mounting cavity 606 with an upper opening is formed between the fourth upper retaining wall 614 and the third upper retaining wall 613, the fourth upper mounting cavity 606 is arranged at the second interval 602, and the fourth upper mounting cavity 606 is communicated with the second through hole 65. A second upper retaining wall 612 is vertically and extendedly arranged at the upper side of the first substrate 61 corresponding to the inner side position of the third upper retaining wall 613, a third upper mounting cavity 605 with an upper opening is formed between the second upper retaining wall 612 and the third upper retaining wall 613, and one end of the first separation cover 62 is arranged in the third upper mounting cavity 605; the upper side of the first substrate 61 is provided with a first upper blocking wall 611 in a vertically extending manner corresponding to the inner side position of the second upper blocking wall 612, a second upper mounting cavity 604 with an upper opening is formed between the first upper blocking wall 611 and the second upper blocking wall 612, one end of the third filtering part 2 is arranged in the second upper mounting cavity 604, the first upper blocking wall 611 surrounds and is provided with a first upper mounting cavity 603 with an upper opening, and the first upper mounting cavity 603 is communicated with the first through opening 64.

A sixth upper blocking wall 616 is vertically extended and arranged on the lower side of the first base plate 61, a fifth upper blocking wall 615 is vertically extended and arranged on the lower side of the first base plate 61 corresponding to the inner side position of the sixth upper blocking wall 616, a sixth upper mounting cavity 608 with a lower opening is formed between the fifth upper blocking wall 615 and the sixth upper blocking wall 616, the sixth upper mounting cavity 608 is communicated with the second opening 65, and one end of the second filtering part 3 is arranged in the sixth upper mounting cavity 608; the fifth upper blocking wall 615 encloses and forms a fifth upper mounting cavity 607 with a lower opening, and the fifth upper mounting cavity 607 is communicated with the first through opening 64. The central tube 5 is sleeved on the outer side wall of the fifth upper retaining wall 615, and the fifth upper mounting cavity 607 is communicated with the central tube 5.

In order to ensure the sealing performance, a plurality of first sealing members 11 are arranged between the third upper baffle wall 613 and the first partition cover 62; a plurality of second sealing elements 12 are arranged between the fourth upper blocking wall 614 and the second shield 63, and a plurality of third sealing elements 13 are arranged between the fifth upper blocking wall 615 and the central tube 5.

As shown in fig. 5 to 6, the second connecting member 7 includes a second base plate 71, a first lower blocking wall 711 extends vertically from an upper side of the second base plate 71, the first lower blocking wall 711 encloses a first lower mounting cavity 72 with an upper opening, and the other end of the second filter part 3 is disposed in the first lower mounting cavity 72; second base plate 71 downside vertical extension has second to keep off wall 712 down, second base plate 71 downside corresponds second keeps off wall 712 inboard position vertical extension is provided with third and keeps off wall 713 down, keep off wall 712 and third down and be formed with the second lower mounting chamber 73 that the under shed set up between wall 713, the one end of first filter house 4 in the setting of second lower mounting chamber 73, keep off wall 713 under the third and enclose and be formed with the third lower mounting chamber 74 that the under shed set up, mounting chamber 74 and first lower mounting chamber 72 intercommunication set up under the third. The first lower blocking wall 711, the second lower blocking wall 712, and the third lower blocking wall 713 are all disposed in a circular shape, the first lower blocking wall 711, the second lower blocking wall 712, and the third lower blocking wall 713 are coaxially disposed, and the outer peripheral side of the second base plate 71 and the outer peripheral side of the second lower blocking wall 712 form a smooth transition.

A third through hole 75 is formed between the first lower mounting cavity 72 and the third lower mounting cavity 74 to form communication, the third through hole 75 is formed at the center of the second substrate 71, and a filter material layer 76 is fixedly connected to the upper side of the third through hole 75. A plurality of spacers 77 are provided on the upper side of the second base plate 71 in the first lower mounting cavity 72 so as to extend toward the second filter unit 3. The spacers 77 are disposed around the third through hole 75 and extend along the radial direction of the second substrate 71, and the spacers 77 are disposed uniformly on the second substrate 71 with a space between the spacers 77.

The PP cotton layer 41 and the scale inhibiting carbon rod layer 42 of the first filter part 4 are both arranged annularly, the upper end of the first filter part 4 is arranged in the second lower mounting cavity 73 and is tightly matched with the second lower mounting cavity 73, and the lower end of the first filter part 4 is arranged with an inner cover 104 matched with the first filter part in shape. The inner ring side of the first filter part 4 and the third lower mounting cavity 74 form a first water passing space 15 for water flow input buffering.

The lower end of the central tube 5 is closed, and in the second filter part 3, the lower end of the second filter part 3 corresponds to the first lower mounting cavity 72 for mounting and is separated by each spacer block 77, and under the separating action of the spacer blocks 77, a second water passing space 16 for water flow to pass through is formed between the lower end of the second filter part 3 and the first lower mounting cavity 72.

The upper end of the central tube 5 is open, and the inside of the central tube 5, the fifth upper mounting cavity 607, the first through opening 64 and the first upper mounting cavity 603 are communicated with each other to form a third water passing space 17 for water to pass through.

When the upper cover 102 and the lower cover 103 are respectively matched with the two end covers of the filter element shell 101, the upper cover 102 and the lower cover 103 are fixedly assembled to press and position the third filter part 2, the first connecting piece 6, the second filter part 3, the second connecting piece 7 and the first filter part 4 which are arranged in the cavity.

The working principle of the utility model is as follows:

in this embodiment, the first water gap 112 is a raw water gap, the second water gap 113 is a waste water gap, and the third water gap 114 is a pure water gap.

As shown by the arrows in fig. 1, raw water enters the inner side wall of the cavity from the first water inlet 112 (raw water inlet), the water source flows to the water inlet side of the first filter part 4 along the gap, the water source is filtered by the PP cotton layer 41 and the scale-inhibiting carbon rod layer 42 and then is input into the first water passing space 15, the water source is filtered by the filter material layer 76 and then is input into the second water passing space 16 through the third port 75, and the water source is guided by the space between the pads 77 to reach the water inlet side position of the lower end of the second filter part 3, so that the first water flow channel 8 is formed.

After the primary filtered water source of the primary treatment is treated by the second filtering part 3 (reverse osmosis filter element), the obtained water flows out from the position of the inner peripheral side of the second filtering part 3 (reverse osmosis filter element), flows into the central tube 5 through the water passing hole 51 and is input into the third water passing space 17, then flows into the first filtering part 4 from the third water passing space 17 for filtering, and the water source filtered by the first filtering part 4 flows out from the third water intersection 114 (pure water opening) after being input into the first space 601, so that the second water flow channel 9 is formed.

The resulting wastewater flows out on the drain side of the second filter unit 3 (reverse osmosis cartridge), is guided to the second pitch 602 by the second port 65, and then flows out from the second water channel 113 (wastewater port), thereby forming the third water channel 10.

The above description is only a preferred embodiment of the present disclosure, and those skilled in the art may still modify the above embodiments without departing from the implementation principle of the present disclosure, and the corresponding modifications should also be regarded as the protection scope of the present disclosure.

Claims (10)

1. Many unification filter cores, including casing (1), its characterized in that: a central pipe (5) and a second filtering part (3) arranged around the central pipe (5) are arranged in the shell (1), a third filtering part (2) is arranged above the central pipe (5), and a first filtering part (4) is arranged below the central pipe (5); a first connecting piece (6) is arranged between the third filtering part (2) and the second filtering part (3) to form water path connection, and a second connecting piece (7) is arranged between the second filtering part (3) and the first filtering part (4) to form water path connection; a first water port (112), a second water port (113) and a third water port (114) are arranged on the shell (1),

the water flow flows along the first water channel (112), the first filtering part (4) and the first connecting piece (6) to the water inlet side of the second filtering part (3) to form a first water flow channel (8);

the water flow flows along the second filtering part (3), the central pipe (5) and the third filtering part (2) to a third water channel (114) to form a second water flow channel (9);

the water flow flows to a second water channel (113) along the drainage side of the second filtering part (3) to form a third water flow channel (10).

2. The all-in-one filter element as recited in claim 1, characterized in that the third filter part (2) is independent from the housing (1), a gap is formed between the third filter part (2) and the housing (1), and water flows to the first filter part (4) along the first water passage opening (112) and the gap.

3. The all-in-one filter element as recited in claim 1, wherein the first connecting piece (6) comprises a first base plate (61), the third filter part (2) is arranged on the upper side of the first base plate (61), the third filter part (2) is sleeved with a first separation cover (62), the upper end of the first separation cover (62) is communicated with a third water channel (114), a first space (601) is formed between the first separation cover (62) and the third filter part (2), and the second water channel (9) flows through the first space (601); the first separation cover (62) is sleeved with a second separation cover (63), the upper end of the second separation cover (63) is communicated with the second water channel (113), a second distance (602) is formed between the second separation cover (63) and the first separation cover (62), and the third water channel (10) flows through the second distance (602); the first base plate (61) is provided with a first through hole (64) used for being communicated with the second water flow channel (9) and a second through hole (65) used for being communicated with the third water flow channel (10), and the first through hole (64) is communicated with the central pipe (5).

4. The all-in-one filter element as recited in claim 3, wherein a fourth upper blocking wall (614) is vertically extended from the upper side of the first base plate (61), a third upper blocking wall (613) is vertically extended from the upper side of the first base plate (61) corresponding to the inner side position of the fourth upper blocking wall (614), the fourth upper blocking wall (614) is arranged between the second partition (63) and the third upper blocking wall (613), a fourth upper mounting cavity (606) with an upper opening is formed between the fourth upper blocking wall (614) and the third upper blocking wall (613), the fourth upper mounting cavity (606) is arranged at the second interval (602), and the fourth upper mounting cavity (606) is communicated with the second opening (65).

5. The all-in-one filter element as claimed in claim 4, wherein a second upper retaining wall (612) is vertically extended from the upper side of the first base plate (61) corresponding to the inner side of the third upper retaining wall (613), a third upper installation cavity (605) with an upper opening is formed between the second upper retaining wall (612) and the third upper retaining wall (613), and one end of the first partition (62) is arranged in the third upper installation cavity (605); the upper side of the first substrate (61) corresponds to the vertical extension of the inner side position of the second upper retaining wall (612) and is provided with a first upper retaining wall (611), an upper opening is formed between the first upper retaining wall (611) and the second upper retaining wall (612) to form an upper mounting cavity (604), one end of the third filtering part (2) is arranged in the second upper mounting cavity (604), the first upper retaining wall (611) is surrounded and closed to form a first upper mounting cavity (603) with an upper opening, and the first upper mounting cavity (603) is communicated with the first through opening (64).

6. The all-in-one cartridge as in claim 4, characterized in that a plurality of first seals (11) are arranged between the third upper baffle wall (613) and the first cage (62); a plurality of second sealing pieces (12) are arranged between the fourth upper baffle wall (614) and the second separation cover (63).

7. The all-in-one filter element as recited in claim 3, wherein a sixth upper blocking wall (616) is vertically extended from the lower side of the first base plate (61), a fifth upper blocking wall (615) is vertically extended from the lower side of the first base plate (61) corresponding to the inner side position of the sixth upper blocking wall (616), a sixth upper mounting cavity (608) with a lower opening is formed between the fifth upper blocking wall (615) and the sixth upper blocking wall (616), the sixth upper mounting cavity (608) is communicated with the second opening (65), and one end of the second filter part (3) is arranged in the sixth upper mounting cavity (608); the fifth upper blocking wall (615) is enclosed to form a fifth upper mounting cavity (607) with a lower opening, and the fifth upper mounting cavity (607) is communicated with the first through opening (64).

8. The all-in-one filter element as recited in claim 7, wherein the central tube (5) is sleeved on the outer side wall of a fifth upper baffle wall (615), the fifth upper installation cavity (607) is communicated with the central tube (5), and a plurality of third sealing elements (13) are arranged between the fifth upper baffle wall (615) and the central tube (5).

9. The all-in-one filter element as claimed in claim 1, wherein the second connecting member (7) comprises a second base plate (71), a first lower blocking wall (711) vertically extends from the upper side of the second base plate (71), the first lower blocking wall (711) encloses a first lower mounting cavity (72) with an upper opening, and the other end of the second filter part (3) is arranged in the first lower mounting cavity (72); second base plate (71) downside vertical extension has second to keep off wall (712) down, second base plate (71) downside corresponds keep off wall (712) inboard position vertical extension is provided with third down and keeps off wall (713) under the second, keep off wall (712) and third down and be formed with installation cavity (73) under the second that the under shed set up between wall (713), the one end of first filter house (4) in installation cavity (73) are down set up to the second, keep off wall (713) and enclose under the third that is formed with the under shed setting installation cavity (74) under the third, installation cavity (74) and first installation cavity (72) intercommunication set up under the third.

10. The all-in-one filter element as claimed in claim 9, wherein a third through opening (75) is arranged between the first lower mounting cavity (72) and the third lower mounting cavity (74) to form a communication, and a filter medium layer (76) is fixedly connected to the upper side of the third through opening (75).

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