Outdoor water purifier with multi-stage composite filtration

Abstract

The present invention provides an outdoor water purifier with multi-stage composite filtration, comprising a casing provided with an inner cavity, wherein a filter element assembly and a water pump assembly are arranged in the inner cavity, a raw water inlet of the filter element assembly is connected to a pump outlet end of the water pump assembly, and a first water inlet end of the water pump assembly is connected to a first water diversion part for introducing raw water; the filter element assembly comprises a first filter element part with a composite filter element structure; and also comprises a water guide pipe for conducting filtered water; the outdoor water purifier with multi-stage composite filtration is provided with a composite filter element structure, which effectively integrates and applies multiple filter material layers in a single filter element structure, thereby having better filtration performance; and has the beneficial effect of compact structure.

Description

Technical Field

[0001] The invention relates to the technical field of water filtration, and in particular to an outdoor water purifier with multi-stage composite filtration. Background Art

[0002] Military personnel, exploration personnel, surveying and mapping workers, mountaineers and explorers, hiking enthusiasts, photography enthusiasts and other outdoor activities often use outdoor water sources as drinking water because it is inconvenient to carry drinking water. Outdoor water sources such as rivers, lakes, streams, springs, rainwater, snow water, etc. are easily polluted by wild animals, plants, soil, etc., and must be purified to remove pathogenic viruses and bacteria, and oxidize and decompose harmful substances before they can be drunk.

[0003] At present, the existing water purifier structure, when used in complex outdoor environments, has the following disadvantages:

[0004] 1. They are generally large in size and inconvenient to carry around;

[0005] 2. Due to the uncertain supply of outdoor water sources, it is difficult to effectively collect raw water and cannot meet the raw water supply needs of water purification applications;

[0006] 3. The structural installation is unstable and it is difficult to cope with the bumpy transportation during outdoor journeys;

[0007] 4. The circuits and water channels in the internal structure are mixed, which makes installation and maintenance difficult, and the working reliability is low in complex outdoor environments. Summary of the invention

[0008] The purpose of the present invention is to provide a multi-stage composite filtration outdoor water purifier to overcome the deficiencies of the prior art.

[0009] An outdoor water purifier with multi-stage composite filtration comprises a casing provided with an inner cavity, a filter element assembly and a water pump assembly are arranged in the inner cavity, a raw water inlet of the filter element assembly is communicated with a pump outlet end of the water pump assembly, and a first water diversion part for introducing raw water is connected to the pump inlet end of the water pump assembly; the filter element assembly comprises a first filter element part, the first filter element part comprises a filter element housing, and the lower end of the filter element housing is provided with the raw water inlet and the first filtered water outlet; a filter material assembly is arranged in the filter element housing, the filter material assembly comprises a first filter layer arranged at the lower part and a second filter layer arranged at the upper part, a raw water flow channel is arranged between the raw water inlet and the first filter layer, a first water inlet flow channel is arranged between the first filter layer and the second filter layer, and a first water outlet flow channel is arranged between the second filter layer and the first filtered water outlet; and a water guide pipe for leading out filtered water is also included, and the first filtered water outlet is communicated with the water guide pipe.

[0010] Furthermore, a raw water flow channel connected to the raw water inlet is formed between the lower inner wall of the filter element housing and the outer side of the first filter layer; a first baffle wall is arranged on the inner side of the first filter layer, and the first baffle wall and the inner side of the first filter layer are connected to form the first water inlet flow channel as well as between the upper inner wall of the filter element housing and the outer side of the second filter layer; a partition portion is arranged between the first filter layer and the second filter layer to form a partition between the raw water flow channel and the first water inlet flow channel; a first water outlet flow channel is arranged between the inner side of the second filter layer and the first filtered water outlet.

[0011] Furthermore, the filter element assembly also includes a second filter element portion; the second filter element portion is provided with a first filtered water inlet and a second filtered water outlet; the first filtered water outlet is connected to the first filtered water inlet, and the second filtered water outlet is connected to the water conduit.

[0012] Furthermore, a second filtered water inlet and a third filtered water outlet are also provided at the lower end of the filter element housing, a third filter layer is provided on the inner side of the first baffle wall, a second water inlet channel is provided between the second filtered water inlet and the third filter layer, and a second water outlet channel is provided between the third filter layer and the third filtered water outlet; the second water inlet channel is connected to the second filtered water outlet, and the third filtered water outlet is connected to the water pipe.

[0013] Furthermore, a second baffle wall is arranged between the first baffle wall and the third filter layer, a third baffle wall is arranged on the inner side of the second filter layer, the second baffle wall is connected to the third baffle wall, the inner side of the second filter layer and the third baffle wall and the first baffle wall and the second baffle wall are connected to form the first water outlet channel; the second water inlet channel is formed between the second baffle wall and the outer side of the third filter layer, and the second water outlet channel is arranged on the inner side of the third filter layer.

[0014] Furthermore, the first filter layer, the first baffle wall, the second baffle wall and the third filter layer are all annular and are arranged in layers from the outside to the inside at the lower part of the filter material component; the second filter layer and the third baffle wall are annular and are arranged in layers from the outside to the inside at the upper part of the filter material component; the first filter layer, the second filter layer, the third filter layer, the first baffle wall, the second baffle wall and the third baffle wall are coaxially arranged.

[0015] Furthermore, the partition portion is a waterproof sealing ring sleeved between the first filter layer and the second filter layer, and the outer peripheral side of the waterproof sealing ring is in sealing contact with the inner wall of the filter element housing.

[0016] Furthermore, the position between the first baffle wall and the inner side of the first filter layer and the position between the upper inner wall of the filter element housing and the outer side of the second filter layer are staggered in the vertical direction, and a drainage section is radially extended from the upper end of the first baffle wall. The first baffle wall and the inner side of the first filter layer and the upper inner wall of the filter element housing and the outer side of the second filter layer are connected through the drainage section to form the first water inlet channel.

[0017] Furthermore, a first shell wall, a second shell wall and a third shell wall are vertically extended from the lower end of the interior of the filter cartridge shell, a first connection channel for connecting the raw water channel and the raw water inlet is formed between the inner wall of the filter cartridge shell and the outer wall of the first shell wall, a second connection channel for connecting the first water outlet channel and the first filtered water outlet is formed between the inner wall of the first shell wall and the outer wall of the second shell wall, a third connection channel for connecting the second water inlet channel and the second filtered water inlet is formed between the inner wall of the second shell wall and the outer wall of the third shell wall, and a fourth connection channel for connecting the second water outlet channel and the third filtered water outlet is formed between the inner walls of the third shell wall.

[0018] Furthermore, the lower end of the filter material assembly is layered with a first end layer, a second end layer and a third end layer, the outer diameters of the first end layer, the second end layer and the third end layer decrease in sequence and the outer diameter of the first end layer is smaller than the outer diameter of the lower end surface of the filter material assembly; the first end layer is provided with a first filter inlet for leading out the first filtered water, the second end layer is provided with a second filter inlet for introducing the second filtered water and the third end layer is provided with a third filter inlet for leading out the third filtered water, the first shell wall and the second shell wall are positioned and matched with the first end layer, the second shell wall and the third shell wall are positioned and matched with the second end layer, and the third shell wall is positioned and matched with the third end layer, so that the first filter inlet is connected to the second connection, the second filter inlet is connected to the third connection, and the third filter inlet is connected to the fourth connection.

[0019] Furthermore, a housing opening is provided at the upper portion of the filter element housing, a filter element upper cover is detachably mounted at the housing opening, and the upper portion of the filter material assembly is positioned and installed at the lower side of the filter element upper cover.

[0020] Furthermore, the raw water inlet, the first filtered water outlet, the second filtered water inlet and the third filtered water outlet are arranged side by side at the lower end of the filter element housing.

[0021] Further, the first filter element part and the second filter element part are vertically arranged at both sides of the inner cavity, the water pump assembly is arranged between the first filter element part and the second filter element part, and a waterway plate assembly is arranged below the first filter element part, the second filter element part and the water pump assembly, and the waterway plate assembly is provided with a pump outlet channel connecting the raw water inlet and the pump outlet end of the water pump assembly, a first water filter channel connecting the first filtered water outlet and the first filtered water inlet, and a second water filter channel connecting the second filtered water outlet and the second filtered water inlet; the waterway plate assembly is provided with a water outlet, and the waterway plate assembly is also provided with a third water filter channel connecting the third filtered water outlet and the water outlet, and the water outlet is externally connected to the water guide pipe.

[0022] Furthermore, it also includes a water diversion switching valve for water circuit switching, the water diversion switching valve is provided with a valve liquid outlet end and a first liquid inlet end and a second liquid inlet end connected to the valve liquid outlet end; the valve liquid outlet end is connected to the pump liquid inlet end of the water pump assembly, and the first liquid inlet end is connected to the first water diversion part; a water inlet is provided on the casing, and the second liquid inlet end is connected to the second water diversion part connected to the water inlet.

[0023] Furthermore, a water supply port is provided on the casing, and the waterway plate assembly is provided with a third water inlet portion communicated with the pump outlet liquid flow channel, and the third water inlet portion is connected to the water supply port.

[0024] Furthermore, a positioning bracket is provided on the upper side of the waterway plate assembly, and the positioning bracket includes a first mounting shell, the first mounting shell forms a first mounting cavity for installing the first filter element part, and the upper side of the first mounting shell is provided with a first mounting opening connected with the first mounting cavity, and a first pressing upper cover is openably and closably provided on the first mounting opening, and when the first pressing upper cover is closed, the lower side of the first pressing upper cover is pressed against the upper side of the first filter element part to apply a tightening pressure toward the waterway plate assembly to the first filter element part.

[0025] Furthermore, the positioning bracket is provided with a first interface, a second interface and a third interface, and the water pump assembly includes a pump body, a pump piston connected to the pump body, a water pump driving handle and a support rod; the pump body is provided with the pump liquid outlet end and the pump liquid inlet end, and the water pump driving handle is hinged to the upper end of the pump piston; the fulcrum of the water pump driving handle is hinged to the upper end of the support rod, and the lower end of the support rod is hinged to the pump body; the pump body is installed and connected to the first interface, and the water pump driving handle is detachable, and the disassembled water pump driving handle is attached to the second interface; the water conduit is attached to the third interface.

[0026] Furthermore, the casing is movably connected with a connecting cover, and a water bag portion can be stored on the connecting cover. The water bag portion can be unfolded to form a water receiving cavity on the connecting cover; the first water diversion portion is connected to the water receiving cavity.

[0027] Furthermore, the housing is provided with a support bracket for supporting the back of the user, and a shoulder strap for the user to hold the housing is connected to the outer side of the housing at a position corresponding to the support bracket.

[0028] The beneficial effects of the present invention are:

[0029] 1. The multi-stage composite filtration outdoor water purifier uses a composite filter element structure to effectively integrate multiple filter material layers in a single filter element structure, thereby having better filtration performance and a compact structure.

[0030] 2. The multi-stage composite filtration outdoor water purifier has a backpack-like design through the use of the shoulder strap to meet the user's need to carry the outdoor water purifier with them.

[0031] 3. Through the application of the water bag unit, the outdoor water source collection application can be effectively met; and combined with the settings of each water diversion unit, the water collection application needs of users and different outdoor environments can be met.

[0032] 4. Through the storable setting of the water bag part, combined with the layout setting of the positioning bracket, filter element assembly, water pump assembly and waterway plate assembly, the stable installation of each component can be met while the volume size of the outdoor water purifier can be more effectively controlled to further meet the portable application needs of the multi-stage composite filtration outdoor water purifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a first combined schematic diagram of the multi-stage composite filtration outdoor water purifier of the present invention;

[0034] Figure 2 A second combined schematic diagram of the multi-stage composite filtration outdoor water purifier of the present invention;

[0035] Figure 3 It is a schematic diagram of the first partial structure of the multi-stage composite filtration outdoor water purifier of the present invention;

[0036] Figure 4 It is a second partial structural schematic diagram of the multi-stage composite filtration outdoor water purifier of the present invention;

[0037] Figure 5 It is a third partial structural schematic diagram of the multi-stage composite filtration outdoor water purifier of the present invention;

[0038] Figure 6 It is a structural schematic diagram of the composite filter element structure of the present invention;

[0039] Figure 7 A schematic diagram of a filter element housing of a composite filter element structure of the present invention;

[0040] Figure 8 A schematic diagram of a filter element assembly of a composite filter element structure of the present invention;

[0041] Fig. 9 It is a schematic diagram of the local structure and water flow organization of the composite filter element structure of the present invention;

[0042] Description of reference numerals:

[0043] Casing 1, top cover 101, side cover 102, cover buckle position 103, inner cavity 11, first opening 12, cover buckle 121, buckle position 13, water inlet 14, water supply port 15, water outlet 16, support bracket 17, shoulder strap 18,

[0044] Water bag body 21, bag opening 22, connecting sleeve 23, positioning rope 24, connecting position 25, positioning buckle 26, water receiving cavity 27, water filter opening 28,

[0045] The first filter element 3, the filter element housing 30, the raw water inlet 31, the first filtered water outlet 32, the second filtered water inlet 33, the third filtered water outlet 34, the first shell wall 35, the second shell wall 36, the third shell wall 37, the first connection 381, the second connection 382, ​​the third connection 383, the fourth connection 384, the filter material assembly 4, the first filter layer 41, the second filter layer 42, the first filter material layer 421, the second filter material layer 422, the third filter layer 43, the first baffle wall 44, the second baffle wall 45, the third baffle wall 46, the first end layer 47, the first filtered water inlet 471, the second end layer 48, the second filtered water inlet 481, the third end layer 49, the third filtered water inlet 491, the raw water flow channel 51, the first water inlet flow channel 52, the drainage section 521, the first water outlet flow channel 53, the second water inlet flow channel 54, the second water outlet flow channel 55, the waterproof sealing ring 56, the filter element cover 57,

[0046] The second filter element 6, the waterway plate assembly 7, the water outlet 71, the water guide pipe 72, the third water guide part 73, the drainage end 74,

[0047] Pump body 81, pump piston 82, water pump driving handle 83, support rod 84, pump outlet 85, pump inlet 86, water diversion switching valve 87, knob 870, first water diversion part 871, filter device 872, second water diversion part 873,

[0048] Positioning bracket 9 , first interface 91 , second interface 92 , third interface 93 , first mounting shell 94 , second mounting shell 95 , first pressing upper cover 96 , second pressing upper cover 97 . DETAILED DESCRIPTION

[0049] In order to make the technical solution, purpose and advantages of the present invention more clearly understood, the present invention is further explained below in conjunction with the accompanying drawings and embodiments.

[0050] like Figures 1 to 5 As shown, the outdoor water purifier with multi-stage composite filtration of the present invention comprises a casing 1 and a connecting cover movably connected to the casing 1, wherein an inner cavity 11 is arranged in the casing 1, and a first opening 12 communicating with the inner cavity 11 is opened at the upper side and the front side of the casing 1, and the connecting cover comprises a top cover 101 matched with the upper side of the casing 1 and a side cover 102 matched with the front side of the casing 1, and the lower end of the side cover 102 is connected to the rotating shaft at the lower end of the casing 1; the top cover 101 is provided with a cover buckle position 103, and the upper side of the casing 1 is provided with a cover fastener 121, and the connecting cover can be flipped to cover the first opening 12, and the cover fastener 121 is snap-fitted with the cover buckle position 103.

[0051] When the connecting cover is closed to the first opening, the side of the connecting cover facing the inner cavity is the closed side; the closed side of the connecting cover is provided with a water bag portion that can be accommodated; the water bag portion includes a water bag body 21 fixedly provided on the closed side of the side cover 102, the water bag body 21 is provided with a bag opening 22, and a plurality of threading sleeves 23 are provided on the periphery of the left and right sides of the bag opening 22; a positioning rope 24 is threaded and connected in the threading sleeve 23, a buckling position 13 is provided at the front side of the casing 1, and a connecting position 25 is provided at the closed side of the top cover 101, one end of the positioning rope 24 is connected to the connecting position 25, and the other end is detachably buckled and connected to the buckling position 13 through a positioning buckle 26.

[0052] When the positioning rope 24 is removed at the buckling position 13 , the water bag body 21 is in a stored state under the action of its own gravity, so that it can be stored in the inner cavity 11 when the connecting cover is turned over and closed.

[0053] When the positioning rope 24 is buckled and connected at the buckling position 13 , the water bag portion is in an unfolded state under the support of the positioning rope 24 to form a water receiving cavity 27 .

[0054] A filter element assembly and a water pump assembly are arranged in the inner cavity 11, and the filter element assembly includes a first filter element portion 3 and a second filter element portion 6 vertically arranged at both sides of the inner cavity 11, and the water pump assembly is arranged between the first filter element portion 3 and the second filter element portion 6, and a waterway plate assembly 7 is arranged below the first filter element portion 3, the second filter element portion 6 and the water pump assembly, and the first filter element portion 3, the second filter element portion 6 and the water pump assembly are connected to the waterway plate assembly 7 to form a connection.

[0055] The water pump assembly is applied as a manual pump structure, which includes a pump body 81, a pump piston 82 connected to the pump body 81, a water pump driving handle 83 and a support rod 84; the pump body 81 is provided with a pump liquid outlet 85 and a pump liquid inlet 86, and the water pump driving handle 83 is hinged to the upper end of the pump piston 82; the fulcrum of the water pump driving handle 83 is hinged to the upper end of the support rod 84, and the lower end of the support rod 84 is hinged to the pump body 81; the water pump driving handle 83 is detachably arranged relative to the pump piston 82 and the support rod 84, and can be relatively independently stored and placed in the inner cavity 11.

[0056] A water diversion switching valve 87 is provided on one side of the pump liquid inlet end 86, and the water diversion switching valve 87 is provided with a valve liquid outlet end and a first liquid inlet end and a second liquid inlet end connected to the valve liquid outlet end; the valve liquid outlet end is connected to the pump liquid inlet end 86 of the water pump assembly, the first liquid inlet end is connected to a first water diversion part 871, and the water receiving chamber 27 is provided with a water filter opening 28; the first water diversion part 871 is connected to the water filter opening 28 and connected to the water receiving chamber 27, thereby forming a first water diversion waterway connecting the pump liquid inlet end 86 and the water receiving chamber 27; the first water diversion part 871 is provided with a filtering device 872, and the filtering device 872 is a filter net.

[0057] The second liquid inlet end is connected to a second water diversion portion 873, and a water inlet 14 is opened on the rear side of the casing 1. The second water diversion portion 873 is connected to the water inlet 14 to communicate with the outside of the casing 1, thereby forming a second water diversion waterway connecting the pump liquid inlet end 86 and the outside of the casing 1; the pump liquid outlet end 85 is connected to the waterway plate assembly 7.

[0058] The water diversion switching valve 87 adopts a conventional water channel switching valve structure, and further includes a knob 870 disposed on the lower side of the casing 1 for controlling the switching between the first water diversion water channel and the second water diversion water channel.

[0059] like Figures 6 to 9 As shown, the first filter element part 3 is applied with a composite filter element structure, and the composite filter element structure includes a filter element housing 30, and the lower end of the filter element housing 30 is provided with a raw water inlet 31, a first filtered water outlet 32, a second filtered water inlet 33 and a third filtered water outlet 34; a filter material assembly 4 is arranged in the filter element housing 30, and the filter material assembly 4 includes an upper filter part located at the upper part of the filter element housing 30 and a lower filter part located at the lower part of the filter element housing 30, the lower filter part is provided with a first filter layer 41 and a third filter layer 43, and the upper filter part is provided with a second filter layer 42.

[0060] The first filter layer 41, the second filter layer 42 and the third filter layer 43 are all arranged in an annular shape, and the second filter layer 42 is arranged in a double-layer filter material structure according to actual needs, that is, the second filter layer 42 may include a first filter material layer 421 and a second filter material layer 422 arranged in an annular column; the third filter layer 43 is arranged at the inner ring side of the first filter layer 41, and a first baffle wall 44 and a second baffle wall 45 are arranged vertically in an annular shape between the inner ring side of the first filter layer 41 and the third filter layer 43 in sequence, and a third baffle wall 46 is arranged in an annular shape on the inner ring side of the second filter layer 42; the first filter layer 41, the second filter layer 42, the third filter layer 43, the first baffle wall 44, the second baffle wall 45 and the third baffle wall 46 are arranged coaxially.

[0061] The first filter layer 41 and the second filter layer 42 have the same outer diameter size, and a raw water flow channel 51 connecting the raw water inlet 31 and the first filter layer 41 is formed between the lower inner wall of the filter element housing 30 and the outer ring side of the first filter layer 41; the position between the first retaining wall 44 and the inner side of the first filter layer 41 and the position between the upper inner wall of the filter element housing 30 and the outer side of the second filter layer 42 are staggered in the vertical direction, and a drainage section 521 is radially extended outward from the upper end of the first retaining wall 44, and the first The retaining wall 44 and the inner side of the first filter layer 41 and the upper inner wall of the filter element housing 30 and the outer side of the second filter layer 42 are connected via the drainage section 521 to form a first water inlet channel 52. A waterproof sealing ring 56 is provided between the first filter layer 41 and the second filter layer 42 to separate the upper filter part from the lower filter part. The outer peripheral side of the waterproof sealing ring 56 is in sealing contact with the inner wall of the filter element housing 30, thereby forming a partition between the raw water channel 51 and the first water inlet channel 52.

[0062] The upper end of the second baffle wall 45 is connected to the lower end of the third baffle wall 46, so that the inner ring side of the second filter layer 42 and the third baffle wall 46 and the first baffle wall 44 and the second baffle wall 45 are connected to form a first water outlet channel 53 connecting the first water filter outlet 32 ​​and the second filter layer 42; and a second water inlet channel 54 connecting the second water filter inlet 33 and the third filter layer 43 is formed between the second baffle wall 45 and the outer ring side of the third filter layer 43, and a second water outlet channel 55 connecting the third water filter outlet 34 and the third filter layer 43 is formed on the inner ring side of the third filter layer 43.

[0063] The second filter element part 6 is provided with an RO membrane filter element structure, which includes a shell of the second filter element part 6 and an RO membrane filter material arranged in the shell of the second filter element part 6, and the lower end of the shell of the second filter element part 6 is provided with a first filtered water inlet, a second filtered water outlet and a wastewater outlet connected to the waterway plate assembly 7.

[0064] The water circuit plate assembly 7 is provided with a pump outlet flow channel connecting the pump outlet end 85 and the raw water inlet, a first filter water flow channel connecting the first filtered water outlet 32 ​​and the first filtered water inlet, and a second filter water flow channel connecting the second filtered water outlet and the second filtered water inlet 33; the water circuit plate assembly 7 is provided with a water outlet end 71, and the water circuit plate assembly 7 is also provided with a third filter water flow channel connecting the third filtered water outlet 34 and the water outlet end 71, and the water outlet end 71 is externally provided with a water guide pipe 72.

[0065] The housing 1 is provided with a water supply port 15 , and the waterway plate assembly 7 is provided with a third water diversion portion 73 communicated with the pump outlet flow channel, and the third water diversion portion 73 is connected to the water supply port 15 .

[0066] The housing 1 is provided with a drain port 16 , the waterway plate assembly 7 is provided with a drain end 74 connected to the drain port 16 , and the waterway plate assembly 7 is provided with a wastewater flow channel connecting the drain end 74 and the wastewater outlet.

[0067] The water supply port 15 and the water discharge port 16 are symmetrically arranged at left and right sides of the housing 1 .

[0068] Here’s how it works:

[0069] When in an environment where water is scarce, the water bag portion can be used to collect raw water through the water receiving chamber 27. The collected raw water can be introduced into the pump liquid inlet end 86 of the water pump assembly through the first water inlet portion 871 with a filter device 872;

[0070] When in an environment with abundant water resources, an external water pipe can be used so that raw water can be directly introduced into the pump inlet end 86 of the water pump assembly through the water inlet 14 and the second water inlet portion 873;

[0071] By using the water diversion switching valve 87, the corresponding water circuit is switched by the knob 870, so as to perform different raw water introduction operations in response to the above-mentioned different environments.

[0072] Or when the water pump assembly is damaged, an external backup water pump can also be used, and the backup water pump can be connected to the water supply port 15, so that the raw water is introduced into the pump outlet flow channel through the third water inlet 73, so as to directly realize the raw water introduction operation driven by the external water pump at the raw water inlet 31.

[0073] Driven by the corresponding water pump assembly, external raw water enters the raw water channel 51 through the raw water inlet 31, and the raw water enters from the outer ring side of the first filter layer 41 to be filtered to obtain coarse filtered water; the coarse filtered water is discharged to the first water inlet channel 52 through the drainage section 521, and then enters from the outer ring side of the second filter layer 42 to be filtered to obtain first filtered water.

[0074] The first filtered water is discharged from the first filtered water outlet 32 ​​through the first water outlet channel 53, and flows to the first filtered water inlet of the second filter element 6 through the guidance of the waterway plate assembly 7, and is filtered through the RO membrane filter element structure of the second filter element 6 to obtain second filtered water and waste water, and the waste water is discharged through the waste water outlet.

[0075] The second filtered water is discharged from the second filtered water outlet, guided by the waterway plate assembly 7 and flows into the second water inlet channel 54 from the second filtered water inlet 33, and the second filtered water enters through the outer ring side of the third filter layer 43 and is filtered to obtain third filtered water, which is discharged from the third filtered water outlet 34 through the second water outlet channel 55 and guided to the water guide pipe 72 through the waterway plate assembly 7 to realize the external output of the third filtered water.

[0076] The composite filter structure of the present invention can make the filter housing 30 as a whole be columnar in response to the needs of installation and assembly, and the raw water inlet 31, the first filtered water outlet 32, the second filtered water inlet 33 and the third filtered water outlet 34 are arranged side by side at the lower end of the filter housing 30; the lower end of the filter housing 30 is vertically extended with a first shell wall 35, a second shell wall 36 and a third shell wall 37 arranged in an annular shape, and a first connection channel 381 for connecting the raw water flow channel 51 and the raw water inlet 31 is formed between the inner wall of the filter housing 30 and the outer wall of the first shell wall 35. A second connection channel 382 for connecting the first water outlet channel 53 and the first filtered water outlet 32 ​​is formed between the inner wall of the first shell wall 35 and the outer wall of the second shell wall 36, a third connection channel 383 for connecting the second water inlet channel 54 and the second filtered water inlet 33 is formed between the inner wall of the second shell wall 36 and the outer wall of the third shell wall 37, and a fourth connection channel 384 for connecting the second water outlet channel 55 and the third filtered water outlet 34 is formed between the inner walls of the third shell wall 37; there is a certain height difference between the first shell wall 35, the second shell wall 36 and the third shell wall 37.

[0077] The lower end of the lower filter portion in the filter material assembly 4 is formed with a first end layer 47, a second end layer 48 and a third end layer 49 which are arranged in layers in sequence with a height difference. The outer diameters of the first end layer 47, the second end layer 48 and the third end layer 49 decrease in sequence and the outer diameter of the first end layer 47 is smaller than the outer diameter of the lower end surface of the lower filter portion; the first end layer 47 is provided with a first filter water inlet 471 for leading out the first filtered water, the second end layer 48 is provided with a second filter water inlet 481 for introducing the second filtered water, and the third end layer 49 is provided with a third filter water inlet 491 for leading out the third filtered water, so that the first filter water inlet 471, the second filter water inlet 481 and the third filter water inlet 491 are distributed in layers.

[0078] The upper portion of the filter element housing 30 is provided with a housing opening for accessing the filter material assembly 4 , and a filter element upper cover 57 is detachably mounted at the housing opening. The upper portion of the filter material assembly 4 is positioned and installed at the lower side of the filter element upper cover 57 .

[0079] When the filter material assembly 4 is inserted into the filter element housing 30, the first shell wall 35 and the second shell wall 36 are positioned and matched with the first end layer 47, the second shell wall 36 and the third shell wall 37 and the second end layer 48 are positioned and matched, and the third shell wall 37 and the third end layer 49 are positioned and matched, so that the first connection channel 381 and the lower inner wall of the filter element housing 30 and the outer ring side of the first filter layer 41 are matched and connected, the second connection channel 382 and the first water filter inlet 471 are matched and connected, the third connection channel 383 and the second water filter inlet 481 are matched and connected, and the fourth connection channel 384 and the third water filter inlet 491 are matched and connected, so as to form the connection and mutual separation of the raw water flow channel 51, the first water outlet flow channel 53, the second water inlet flow channel 54 and the second water outlet flow channel 55.

[0080] The inner cavity 11 is provided with a positioning bracket 9 for installing the filter element assembly, water pump assembly and waterway plate assembly 7. The positioning bracket 9 includes a positioning portion 90 arranged at the lower part of the inner cavity. A positioning cavity 901 is formed in the positioning portion 90. The waterway plate assembly 7 is installed at the lower part of the positioning cavity 901.

[0081] The upper side of the positioning portion 90 includes a first mounting shell 94 and a second mounting shell 95 located at both sides of the inner cavity 11. The first mounting shell 94 forms a first mounting cavity for installing the first filter element 3. The upper side of the first mounting shell 94 is provided with a first mounting opening connected to the first mounting cavity. The first mounting opening is provided with a first pressing upper cover 96 that can be opened and closed. When the first pressing upper cover 96 is closed, the lower side of the first pressing upper cover 96 is pressed against the upper side of the filter element upper cover 57 to apply a tightening pressure toward the lower waterway plate assembly 7 to the first filter element 3, so that the water inlet and outlet ports at the lower end of the first filter element 3 are stably connected to the waterway plate assembly 7 to prevent the internal water source from seeping out. Similarly, the second mounting shell 95 adopts a structural form with the same technical principle as the first mounting shell 94, and applies a tightening pressure toward the lower waterway plate assembly 7 to the second filter element 6 with the second pressing upper cover 97.

[0082] The upper side of the positioning portion 90 also includes a first interface 91 located between the first mounting shell 94 and the second mounting shell 95 for installing and connecting the pump body 81, a second interface 92 for attaching the water pump driving handle 83 after disassembly, and a third interface 93 for positioning and attaching the water pipe 72.

[0083] A support bracket 17 for supporting the user's back is arranged on the rear side of the casing 1, and the support bracket 17 is arranged in an X shape as a whole; a shoulder strap 18 for the user to carry is also connected to the rear side of the casing 1 corresponding to the position of the support bracket 17, so that the user can carry the multi-stage composite filtration outdoor water purifier in an outdoor environment.

[0084] The above description is only a preferred embodiment of the present invention. Those skilled in the art can still modify the embodiment without departing from the implementation principle of the present invention, and the corresponding modified scheme should also be regarded as the protection scope of the present invention.

Claims

1. An outdoor water purifier with multi-stage composite filtration, comprising a housing provided with an inner cavity, wherein a filter element assembly and a water pump assembly are provided in the inner cavity, wherein the raw water inlet of the filter element assembly is connected to the pump outlet of the water pump assembly, and wherein: The pump inlet end of the water pump assembly is connected to a first water diversion part for introducing raw water; the filter element assembly includes a first filter element part, the first filter element part includes a filter element housing, and the lower end of the filter element housing is provided with the raw water inlet and the first filtered water outlet; a filter material assembly is arranged in the filter element housing, the filter material assembly includes a first filter layer arranged at the lower part and a second filter layer arranged at the upper part, a raw water flow channel is arranged between the raw water inlet and the first filter layer, a first water inlet flow channel is arranged between the first filter layer and the second filter layer, and a first water outlet flow channel is arranged between the second filter layer and the first filtered water outlet; and also includes a water guide pipe for leading out filtered water, and the first filtered water outlet is connected to the water guide pipe; The upper side and the front side of the housing are provided with a first opening communicating with the inner cavity; the housing is movably connected with a connection cover, the connection cover comprises a top cover matched with the upper side of the housing and a side cover matched with the front side of the housing, the lower end of the side cover is connected with the rotating shaft at the lower end of the housing, and the connection cover can be flipped to cover the first opening; The connecting cover can be provided with a water bag portion, and the water bag portion can be unfolded to form a water receiving cavity on the connecting cover; the first water diversion portion is communicated with the water receiving cavity; the water bag portion includes a water bag body fixedly provided on the closed side of the side cover, the water bag body is provided with a bag opening, and a plurality of threading sleeves are provided on the periphery of the left and right sides of the bag opening; a positioning rope is threaded and connected in the threading sleeve, a buckle position is provided at the front side of the housing, and a connecting position is provided at the closed side of the top cover, one end of the positioning rope is connected to the connecting position, and the other end is detachably buckled and connected to the buckle position; When the positioning rope is removed at the buckle position, the water bag body is in a stored state under the action of its own gravity, and is stored in the inner cavity when the connecting cover is flipped and closed; When the positioning rope is buckled and connected to the buckling position, the water bag portion is in an unfolded state under the support of the positioning rope to form the water receiving cavity; A waterway plate assembly is arranged below the first filter element part; a positioning bracket is arranged on the upper side of the waterway plate assembly, and the positioning bracket includes a first mounting shell, the first mounting shell forms a first mounting cavity for mounting the first filter element part, a first mounting opening communicating with the first mounting cavity is arranged on the upper side of the first mounting shell, and a first pressing upper cover is openably and closably arranged on the first mounting opening, and when the first pressing upper cover is closed, the lower side of the first pressing upper cover is pressed against the upper side of the first filter element part to apply a tightening pressure toward the waterway plate assembly to the first filter element part.

2. The outdoor water purifier according to claim 1, characterized in that: A raw water flow channel connected to the raw water inlet is formed between the lower inner wall of the filter element housing and the outer side of the first filter layer; a first baffle wall is arranged on the inner side of the first filter layer, and the first baffle wall and the inner side of the first filter layer are connected to form the first water inlet flow channel as well as between the upper inner wall of the filter element housing and the outer side of the second filter layer; a partition portion is arranged between the first filter layer and the second filter layer to form a partition between the raw water flow channel and the first water inlet flow channel; a first water outlet flow channel is arranged between the inner side of the second filter layer and the first filtered water outlet.

3. The outdoor water purifier according to claim 2, characterized in that: The filter element assembly also includes a second filter element portion; the second filter element portion is provided with a first filtered water inlet and a second filtered water outlet; the first filtered water outlet is connected to the first filtered water inlet, and the second filtered water outlet is connected to the water conduit.

4. The outdoor water purifier according to claim 3, characterized in that: A second filtered water inlet and a third filtered water outlet are also provided at the lower end of the filter element housing, a third filter layer is provided on the inner side of the first baffle wall, a second water inlet channel is provided between the second filtered water inlet and the third filter layer, and a second water outlet channel is provided between the third filter layer and the third filtered water outlet; the second water inlet channel is connected to the second filtered water outlet, and the third filtered water outlet is connected to the water conduit.

5. The outdoor water purifier according to claim 4, characterized in that: The first filter element part and the second filter element part are vertically arranged at two sides of the inner cavity, the water pump assembly is arranged between the first filter element part and the second filter element part, and a waterway plate assembly is arranged below the first filter element part, the second filter element part and the water pump assembly. The waterway plate assembly is provided with a pump outlet channel connecting the raw water inlet and the pump outlet end of the water pump assembly, a first water filter channel connecting the first filtered water outlet and the first filtered water inlet, and a second water filter channel connecting the second filtered water outlet and the second filtered water inlet; the waterway plate assembly is provided with a water outlet, and the waterway plate assembly is also provided with a third water filter channel connecting the third filtered water outlet and the water outlet, and the water outlet is externally connected to the water guide pipe.

6. The outdoor water purifier according to claim 1, characterized in that: It also includes a water diversion switching valve for water circuit switching, the water diversion switching valve is provided with a valve liquid outlet end and a first liquid inlet end and a second liquid inlet end connected to the valve liquid outlet end; the valve liquid outlet end is connected to the pump liquid inlet end of the water pump assembly, and the first liquid inlet end is connected to the first water diversion part; a water inlet is provided on the casing, and the second liquid inlet end is connected to the second water diversion part connected to the water inlet.

7. The outdoor water purifier according to claim 5, characterized in that: The casing is provided with a water supply port, the waterway plate assembly is provided with a third water diversion part which is communicated with the pump outlet liquid flow channel, and the third water diversion part is connected with the water supply port.

8. The outdoor water purifier according to claim 1, characterized in that: The positioning bracket is provided with a first interface, a second interface and a third interface, and the water pump assembly includes a pump body, a pump piston connected to the pump body, a water pump driving handle and a support rod; the pump body is provided with the pump liquid outlet and the pump liquid inlet, and the water pump driving handle is hinged to the upper end of the pump piston; the fulcrum of the water pump driving handle is hinged to the upper end of the support rod, and the lower end of the support rod is hinged to the pump body; the pump body is installed and connected to the first interface, and the water pump driving handle is detachable, and the disassembled water pump driving handle is attached to the second interface; the water conduit is attached to the third interface.

9. The outdoor water purifier according to claim 1, characterized in that: The housing is provided with a support bracket for supporting the back of a user, and a shoulder strap for the user to carry is connected to the outer side of the housing at a position corresponding to the support bracket.

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