Filter element auxiliary system and water purification equipment

Abstract

The utility model discloses a filter element auxiliary system and water purification equipment, and relates to the technical field of water purification, the filter element auxiliary system comprises a filter element body, a water path assembly and a gas path assembly; the filter element body is provided with a filter element inlet and a filter element outlet, and a filter material is arranged on a connecting passage between the filter element inlet and the filter element outlet; the waterway assembly is communicated with the filter element inlet; the water path assembly is used for supplying to-be-purified water to the filter element inlet, so that the to-be-purified water is discharged from the filter element outlet after being filtered by the filter material; the gas path assembly is communicated with the filter element inlet; the gas path assembly is used for supplying gas to the filter element inlet so as to push residual to-be-purified water in the filter element body to enter the filter material for filtering. According to the technical scheme, residual water in the filter element body can be emptied through the air path assembly, so that the interior of the filter element body is kept dry, bacterium breeding is reduced, the service life of the filter element can be prolonged, and a good filtering effect is kept.

Description

Technical Field

[0001] This utility model relates to the field of water purification technology, specifically to a filter cartridge auxiliary system and water purification equipment. Background Technology

[0002] The core component of a water purifier is the filter element. The filter element filters the raw water through appropriate filter media to remove impurities and pollutants such as bacteria, calcium and magnesium ions, and heavy metals, ensuring the quality of the output water.

[0003] Because the filter cartridge needs to come into frequent contact with external water sources, and the residual water inside the filter cartridge is often difficult to drain, the filter cartridge is in a humid environment for a long time. Humid conditions are prone to bacterial growth, which can cause the filter cartridge to become moldy. Moldy filter cartridges can easily cause secondary pollution to the water during filtration, resulting in poor water quality after filtration, and may even cause the filter cartridge to be scrapped prematurely due to severe pollution. Utility Model Content

[0004] The purpose of this utility model is to provide a filter element auxiliary system, which aims to solve the technical problem that existing filter elements are prone to bacterial growth and mold due to long-term exposure to humid environments, which will have an adverse effect on the filtration effect and may even lead to premature failure of the filter element.

[0005] To achieve its purpose, the technical solution adopted by this utility model is as follows:

[0006] A filter element auxiliary system, the filter element auxiliary system comprising:

[0007] The filter element body has a filter element inlet and a filter element outlet, and a filter media is provided on the connection passage between the filter element inlet and the filter element outlet;

[0008] A water circuit assembly is connected to the filter element inlet; the water circuit assembly is used to supply water to be purified to the filter element inlet, so that the water to be purified is filtered by the filter media and discharged from the filter element outlet.

[0009] An air path assembly is connected to the filter element inlet; the air path assembly is used to supply air to the filter element inlet to push the residual water to be purified in the filter element body into the filter media for filtration.

[0010] In some embodiments, the water circuit assembly includes a water pump; the input end of the water pump is used to connect to an external water source, and the output end of the water pump is connected to the filter cartridge inlet.

[0011] In some embodiments, the air path assembly includes an air pump; the input end of the air pump is used to connect to an external air source, and the output end of the air pump is connected to the filter inlet.

[0012] In some embodiments, the water circuit assembly further includes a water circuit check valve disposed on a first connection passage between the output end of the water pump and the inlet of the filter element.

[0013] In some embodiments, the air path assembly further includes an air path one-way valve, which is disposed on a second connection passage between the output end of the air pump and the filter inlet.

[0014] In some embodiments, the water circuit assembly further includes a first pressure gauge, the detection end of which is disposed on a first connection passage between the output end of the water pump and the inlet of the filter element, and the first pressure gauge is used to obtain the water pressure of the first connection passage.

[0015] In some embodiments, the water circuit assembly further includes a second pressure gauge, the detection end of which is disposed on a second connection passage between the output end of the air pump and the inlet of the filter element, and the second pressure gauge is used to obtain the air pressure of the second connection passage.

[0016] In some embodiments, the filter element auxiliary system further includes a trigger switch, the water circuit assembly further includes a water inlet solenoid valve, the air circuit assembly further includes an air inlet solenoid valve, and the trigger switch is electrically connected to the water inlet solenoid valve and the air inlet solenoid valve;

[0017] The trigger switch is used to send an open signal to the water inlet solenoid valve and a close signal to the air inlet solenoid valve when a first input signal is received, so as to trigger the water inlet solenoid valve to open and the air inlet solenoid valve to close; and the trigger switch is used to send a close signal to the water inlet solenoid valve and an open signal to the air inlet solenoid valve when a second input signal is received, so as to trigger the water inlet solenoid valve to close and the air inlet solenoid valve to open.

[0018] In some embodiments, the filter cartridge auxiliary system further includes a water storage container and a water volume detection device. The water storage container is used to collect the water discharged from the filter cartridge outlet. The water volume detection device is electrically connected to the trigger switch and is used to obtain the real-time water volume of the water storage container and send a corresponding water volume signal to the trigger switch.

[0019] The trigger switch is used to send an open signal to the water inlet solenoid valve and a close signal to the air inlet solenoid valve according to the water volume signal; and / or, the trigger switch is used to send a close signal to the water inlet solenoid valve and an open signal to the air inlet solenoid valve according to the water volume signal.

[0020] In some embodiments, the water level detection device includes a first water level sensor, which is used to send a filtering signal to the trigger switch when the real-time water level in the water storage container is not higher than a first preset water level; the trigger switch is used to send an opening signal to the water inlet solenoid valve and a closing signal to the air inlet solenoid valve when it receives the filtering signal, so as to trigger the water inlet solenoid valve to open and the air inlet solenoid valve to close.

[0021] In some embodiments, the water level detection device includes a second water level sensor, which is used to send an emptying signal to the trigger switch when the real-time water level in the water storage container is not lower than a second preset water level; the trigger switch is used to send a closing signal to the water inlet solenoid valve and an opening signal to the air inlet solenoid valve when it receives the emptying signal, so as to trigger the water inlet solenoid valve to close and the air inlet solenoid valve to open.

[0022] In some embodiments, the filter element auxiliary system further includes a backwashing device disposed inside the filter element body, the backwashing device being used to rinse impurities inside the filter element body.

[0023] Correspondingly, this utility model also proposes a water purification device, which includes the filter element auxiliary system as described above.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] The filter cartridge auxiliary system proposed in this utility model adds an air passage component to the water passage component. In actual use, after the water to be purified is supplied to the filter cartridge body through the water passage component, and the purified water completes the filtration process and is discharged from the filter cartridge outlet, air can be supplied to the filter cartridge body through the air passage component. This air pressure then pushes the remaining water to be purified within the filter cartridge body into the filter media for filtration and finally discharges from the filter cartridge outlet. This solution can empty the remaining water within the filter cartridge body under air pressure, keeping the inside of the filter cartridge body dry, thereby reducing bacterial growth, maintaining good filtration effect, and extending the service life of the filter cartridge body. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1This is a schematic diagram of the connection structure of an embodiment of the filter element auxiliary system of this utility model.

[0028] Explanation of icon numbers:

[0029] 1. Filter element body;

[0030] 2. Water circuit components; 21. Water pump; 22. Water circuit check valve; 23. First pressure gauge; 24. Inlet solenoid valve;

[0031] 3. Air circuit components; 31. Air pump; 32. Air circuit check valve; 33. Second pressure gauge; 34. Inlet solenoid valve;

[0032] 4. Trigger the switch;

[0033] 5. Water storage container;

[0034] 6. Water level detection device; 61. First water level sensor; 62. Second water level sensor.

[0035] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0037] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0038] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0039] The core component of a water purifier is the filter element. The filter element filters the raw water through appropriate filter media to remove impurities and pollutants such as bacteria, calcium and magnesium ions, and heavy metals, ensuring the quality of the output water.

[0040] Because the filter cartridge needs to come into frequent contact with external water sources, and the residual water inside the filter cartridge is often difficult to drain, the filter cartridge is in a humid environment for a long time. Humid conditions are prone to bacterial growth, which can cause the filter cartridge to become moldy. Moldy filter cartridges can easily cause secondary pollution to the water during filtration, resulting in poor water quality after filtration, and may even cause the filter cartridge to be scrapped prematurely due to severe pollution.

[0041] In view of the above problems, this utility model provides a filter element auxiliary system, which aims to drain the residual water in the filter element so as to keep the inside of the filter element as dry as possible, reduce bacterial growth, thereby extending the service life of the filter element and maintaining a good filtration effect.

[0042] Please see Figure 1 The filter element auxiliary system provided by this utility model includes:

[0043] The filter element body 1 has a filter element inlet (not shown in the figure) and a filter element outlet (not shown in the figure), and a filter media (not shown in the figure) is provided on the connection passage between the filter element inlet and the filter element outlet.

[0044] Water circuit component 2 is connected to the filter element inlet; water circuit component 2 is used to supply water to be purified into the filter element inlet so that the water to be purified is discharged from the filter element outlet after being filtered by the filter media.

[0045] Air path assembly 3 is connected to the filter element inlet; air path assembly 3 is used to supply air to the filter element inlet to push the residual water to be purified in the filter element body 1 into the filter media for filtration.

[0046] In this embodiment, the filter element body 1 may include a shell and a filter media encapsulated inside the shell. The filter element inlet and filter element outlet may be disposed on the shell and respectively opposite to the water inlet end and water outlet end of the filter media. The filter media may include functional structural layers such as reverse osmosis membrane filter layer, chemical fiber filter layer, activated carbon filter layer, carbon fiber filter layer, and polypropylene filter layer for filtering, separating, and purifying water.

[0047] Water circuit component 2 may include water pipes, pipe joints and other water circuit structural components, as well as water conveying equipment such as pump body and siphon device; Water circuit component 2 is connected to an external water source, and can supply the water to be purified (i.e. raw water) from the external water source into the filter element inlet, so that the water to be purified becomes clean water (i.e. pure water) after being filtered, separated and purified by the filter media and discharged from the filter element outlet for user use.

[0048] The air path assembly 3 may include air path structural components such as air pipes and pipe joints, as well as gas conveying equipment such as pumps and fans. The air path assembly 3 is connected to an external air source. The air path assembly 3 can supply external gas into the filter element inlet. Under a certain air pressure, it can push the residual water to be purified in the filter element body 1 into the filter media for filtration and finally discharge it from the filter element outlet. This can prevent the residual water from accumulating inside the filter element body 1 for a long time and promoting bacterial growth.

[0049] Therefore, the filter element auxiliary system provided in this embodiment adds an air path component 3 to the water path component 2. In actual use, after the water to be purified is supplied to the filter element body 1 through the water path component 2, and the water to be purified is filtered and discharged from the filter element outlet, air can be supplied to the filter element body 1 through the air path component 3. This allows the residual water to be purified in the filter element body 1 to enter the filter media for filtration and finally be discharged from the filter element outlet with the help of a certain air pressure. This solution can drain the residual water in the filter element body 1 under the action of air pressure, keeping the inside of the filter element body 1 dry, thereby reducing bacterial growth, maintaining a good filtration effect, and extending the service life of the filter element body 1.

[0050] Optionally, refer to Figure 1 The water circuit component 2 includes a water pump 21; the input end of the water pump 21 is used to connect to an external water source, and the output end of the water pump 21 is connected to the filter element inlet. By setting the water pump 21, the water to be purified in the external water source can be conveniently drawn into the filter element body 1 under negative pressure to complete the filtration operation according to the user's needs.

[0051] Optionally, refer to Figure 1The air circuit assembly 3 includes an air pump 31; the input end of the air pump 31 is used to connect to an external air source, and the output end of the air pump 31 is connected to the filter element inlet. By setting the air pump 31, gas from the external air source can be conveniently drawn into the filter element body 1 under negative pressure to complete the residual water drainage operation according to user needs.

[0052] Optionally, refer to Figure 1 The water circuit assembly 2 also includes a water circuit check valve 22, which is disposed in the first connection passage between the output end of the water pump 21 and the filter element inlet. The water circuit check valve 22 allows fluid to flow from the water pump 21 to the filter element inlet and prevents fluid from flowing from the filter element inlet back to the water pump 21. This prevents backflow of water and avoids gas from entering the first connection passage from the filter element body 1, thereby helping to protect the water pump 21 and related components from damage by back pressure and preventing water pressure drop.

[0053] Optionally, refer to Figure 1 The air path assembly 3 also includes an air path check valve 32, which is disposed in the second connection passage between the output end of the air pump 31 and the filter element inlet. The air path check valve 32 allows fluid to flow from the air pump 31 to the filter element inlet and prevents fluid from flowing from the filter element inlet back to the air pump 31. This prevents gas backflow and avoids water from entering the second connection passage from the filter element body 1, thereby helping to protect the air pump 31 and related components from damage by reverse pressure and preventing pressure drop.

[0054] Optionally, refer to Figure 1 The water circuit assembly 2 also includes a first pressure gauge 23. The detection end of the first pressure gauge 23 is set on the first connection passage between the output end of the water pump 21 and the inlet of the filter element. The first pressure gauge 23 is used to obtain the water pressure of the first connection passage.

[0055] By setting the first pressure gauge 23, users can view the water pressure in the first connection passage in real time and detect abnormalities through changes in water pressure, allowing for timely intervention and control of the filtration process. When a water circuit check valve 22 is installed in the first connection passage, the first pressure gauge 23 can be positioned between the water pump 21 and the water circuit check valve 22.

[0056] Optionally, refer to Figure 1 The water circuit assembly 2 also includes a second pressure gauge 33. The detection end of the second pressure gauge 33 is set on the second connection passage between the output end of the air pump 31 and the filter inlet. The second pressure gauge 33 is used to obtain the air pressure of the second connection passage.

[0057] By setting a second pressure gauge 33, users can view the air pressure in the second connection passage in real time and detect abnormalities through changes in air pressure, allowing for timely intervention and control of the residual water drainage operation. When a one-way air valve 32 is installed in the second connection passage, the second pressure gauge 33 can be positioned between the air pump 31 and the one-way air valve 32.

[0058] Optionally, refer to Figure 1 The filter element auxiliary system also includes a trigger switch 4, the water circuit assembly 2 also includes a water inlet solenoid valve 24, and the air circuit assembly 3 also includes an air inlet solenoid valve 34. The trigger switch 4 is electrically connected to the water inlet solenoid valve 24 and the air inlet solenoid valve 34.

[0059] The trigger switch 4 is used to send an open signal to the water inlet solenoid valve 24 and a close signal to the air inlet solenoid valve 34 when a first input signal is received, so as to trigger the water inlet solenoid valve 24 to open and the air inlet solenoid valve 34 to close; and the trigger switch 4 is used to send a close signal to the water inlet solenoid valve 24 and an open signal to the air inlet solenoid valve 34 when a second input signal is received, so as to trigger the water inlet solenoid valve 24 to close and the air inlet solenoid valve 34 to open.

[0060] Specifically, trigger switch 4 can refer to a module in the controller that can realize signal input and output based on a preset program; the first input signal can be an external signal actively input by the user to trigger switch 4 through touch, voice control, command input, etc., or it can be an internal signal automatically sent to trigger switch 4 by other modules in the filter cartridge auxiliary system based on a preset program, which is not limited here. The opening and closing signals sent by trigger switch 4 to water inlet solenoid valve 24 and air inlet solenoid valve 34 are both electrical signals.

[0061] By setting the trigger switch 4, when filtration is required (i.e., when the first input signal is received), the water inlet solenoid valve 24 is triggered to open and the air inlet solenoid valve 34 is triggered to close simultaneously, so as to simultaneously realize the opening of the first connection path and the closing of the second connection path. This ensures that external water can be normally supplied into the filter element body 1 along the first connection path during the filtration process, and at the same time, it ensures that external gas will not enter the filter element body 1 along the second connection path and cause interference during the filtration process. In addition, when the filtration operation is completed and the residual water needs to be drained (i.e., when the second input signal is received), the water inlet solenoid valve 24 is triggered to close and the air inlet solenoid valve 34 is triggered to open simultaneously, so as to simultaneously realize the closing of the first connection path and the opening of the second connection path. This ensures that external gas can be normally supplied into the filter element body 1 along the second connection path during the draining of residual water, and at the same time, it ensures that external water will not enter the filter element body 1 along the first connection path and cause interference during the draining of residual water.

[0062] When a water circuit check valve 22 is provided in the first connection passage, the water inlet solenoid valve 24 can be located between the water pump 21 and the water circuit check valve 22; when an air circuit check valve 32 is provided in the second connection passage, the air inlet solenoid valve 34 can be located between the air pump 31 and the air circuit check valve 32.

[0063] Optionally, refer to Figure 1 The filter cartridge auxiliary system also includes a water storage container 5 and a water volume detection device 6. The water storage container 5 is used to collect the water discharged from the filter cartridge outlet. The water volume detection device 6 is electrically connected to the trigger switch 4. The water volume detection device 6 is used to obtain the real-time water volume of the water storage container 5 and send the corresponding water volume signal to the trigger switch 4.

[0064] The trigger switch 4 is used to send an open signal to the water inlet solenoid valve 24 and a close signal to the air inlet solenoid valve 34 according to the water volume signal; and / or, the trigger switch 4 is used to send a close signal to the water inlet solenoid valve 24 and an open signal to the air inlet solenoid valve 34 according to the water volume signal.

[0065] Specifically, the water storage container 5 can be a water tank installed at the outlet of the filter element. The water storage container 5 can temporarily store the filtered pure water. When water is needed later, the pure water in the water storage container 5 can be directly taken without repeating the filtration process.

[0066] The water volume detection device 6 can be a water level sensor, flow meter, etc., as long as it can obtain the real-time water volume of the water storage container 5 directly or indirectly. There are no restrictions here.

[0067] When the water level detection device 6 detects that the water level in the water storage container 5 is low, it can be assumed that the water storage container 5 is insufficient to meet subsequent water demand and requires filtration to replenish pure water. At this time, the water level detection device 6 can send a corresponding water level signal to the trigger switch 4, which drives the trigger switch 4 to send an open signal to the water inlet solenoid valve 24 and a close signal to the air inlet solenoid valve 34, thus opening the water inlet passage and closing the air inlet passage to perform the filtration operation. Similarly, when the water level detection device 6 detects that the water level in the water storage container 5 is high, it can be assumed that the water storage container 5 can meet subsequent water demand and there is no need to continue collecting filtered pure water. At this time, the water level detection device 6 can send a corresponding water level signal to the trigger switch 4, which drives the trigger switch 4 to send a close signal to the water inlet solenoid valve 24 and an open signal to the air inlet solenoid valve 34, thus closing the water inlet passage and opening the air inlet passage to drain the remaining water.

[0068] Based on the above settings, the filtration operation and residual water drainage operation can be automatically triggered according to the amount of water stored in the water storage container 5, and the switching can be done automatically without the need for manual triggering by the operator, thereby improving the automation and intelligence of the filter cartridge auxiliary system.

[0069] Optionally, refer to Figure 1 The water level detection device 6 includes a first water level sensor 61, which is used to send a filtering signal to the trigger switch 4 when the real-time water level in the water storage container 5 is not higher than the first preset water level; the trigger switch 4 is used to send an opening signal to the water inlet solenoid valve 24 and a closing signal to the air inlet solenoid valve 34 when the filtering signal is received, so as to trigger the water inlet solenoid valve 24 to open and the air inlet solenoid valve 34 to close.

[0070] Optionally, refer to Figure 1 The water level detection device 6 includes a second water level sensor 62, which is used to send an emptying signal to the trigger switch 4 when the real-time water level in the water storage container 5 is not lower than the second preset water level; the trigger switch 4 is used to send a closing signal to the water inlet solenoid valve 24 and an opening signal to the air inlet solenoid valve 34 when it receives the emptying signal, so as to trigger the water inlet solenoid valve 24 to close and the air inlet solenoid valve 34 to open.

[0071] Specifically, the first water level sensor 61 is a low water level sensor, and the second water level sensor 62 is a high water level sensor. The first preset water level is lower than the second preset water level. When the first water level sensor 61 detects that the real-time water level in the water storage container 5 is not higher than the first preset water level, it can be considered that the water volume in the water storage container 5 is insufficient to meet the subsequent water demand, and a filtration operation is required to replenish pure water. At this time, the first water level sensor 61 can send a filtration signal to the trigger switch 4 to drive the trigger switch 4 to send an open signal to the water inlet solenoid valve 24 and a close signal to the air inlet solenoid valve 34, so that the water inlet passage is open and the air inlet passage is closed, so as to carry out the filtration operation. Similarly, when the second water level sensor 62 detects that the real-time water level in the water storage container 5 is not lower than the second preset water level, it can be considered that the water volume in the water storage container 5 at this time can meet the subsequent water demand, and there is no need to continue collecting the filtered pure water; at this time, the second water level sensor 62 can send an emptying signal to the trigger switch 4 to drive the trigger switch 4 to send a closing signal to the water inlet solenoid valve 24 and an opening signal to the air inlet solenoid valve 34, so that the water inlet passage is cut off and the air inlet passage is opened, so as to carry out the residual water body emptying operation.

[0072] Based on the above settings, the filtration operation and residual water drainage operation can be automatically triggered according to the real-time water level of the water storage container 5, and the switching can be done automatically without the need for manual triggering by the operator, thereby improving the automation and intelligence of the filter element auxiliary system.

[0073] Optionally, refer to Figure 1 The filter element auxiliary system also includes a backwashing device (not shown in the figure). The backwashing device is located inside the filter element body 1 and is used to rinse the impurities inside the filter element body 1.

[0074] The backwashing operation can remove the impurities accumulated inside the filter element body 1, thereby further improving the filtration effect and extending the service life of the filter element body 1.

[0075] Correspondingly, this utility model also provides a water purification device, please refer to [link / reference]. Figure 1 The water purification device includes the filter cartridge auxiliary system in any of the above embodiments.

[0076] Specifically, the water purification equipment in this embodiment refers to an assembly of equipment that uses filter elements to filter, separate, and purify water to generate clean water for use in daily life, chemical industry, medical treatment, aquaculture, and planting.

[0077] The specific structure of the filter cartridge auxiliary system can be referred to the above embodiments. Since this water purification device adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be elaborated further here.

[0078] It should be noted that other contents of the filter element auxiliary system and water purification equipment disclosed in this utility model can be found in the prior art, and will not be repeated here.

[0079] The above are merely optional embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made under the technical concept of this utility model using the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A filter cartridge auxiliary system, characterized in that, The filter element auxiliary system includes: The filter element body has a filter element inlet and a filter element outlet, and a filter media is provided on the connection passage between the filter element inlet and the filter element outlet; A water circuit assembly is connected to the filter element inlet; the water circuit assembly is used to supply water to be purified to the filter element inlet, so that the water to be purified is filtered by the filter media and discharged from the filter element outlet. An air path assembly is connected to the filter element inlet; the air path assembly is used to supply air to the filter element inlet to push the residual water to be purified in the filter element body into the filter media for filtration. The filter element auxiliary system also includes a trigger switch, a water storage container and a water volume detection device. The water circuit component also includes a water inlet solenoid valve, and the air circuit component also includes an air inlet solenoid valve. The trigger switch is electrically connected to the water inlet solenoid valve and the air inlet solenoid valve. The trigger switch is used to send an open signal to the water inlet solenoid valve and a close signal to the air inlet solenoid valve when a first input signal is received, so as to trigger the water inlet solenoid valve to open and the air inlet solenoid valve to close; and the trigger switch is used to send a close signal to the water inlet solenoid valve and an open signal to the air inlet solenoid valve when a second input signal is received, so as to trigger the water inlet solenoid valve to close and the air inlet solenoid valve to open. The water storage container is used to collect the water discharged from the filter cartridge outlet; the water volume detection device is electrically connected to the trigger switch, and the water volume detection device includes a first water level sensor and a second water level sensor, wherein the first water level sensor is a low water level sensor and the second water level sensor is a high water level sensor. When the first water level sensor detects that the real-time water level in the water storage container is not higher than the first preset water level, the first water level sensor sends a filtering signal to the trigger switch to drive the trigger switch to send an open signal to the water inlet solenoid valve and a close signal to the air inlet solenoid valve, so that the water inlet passage is open and the air inlet passage is closed, in order to perform a filtering operation; when the second water level sensor detects that the real-time water level in the water storage container is not lower than the second preset water level, the second water level sensor sends an emptying signal to the trigger switch to drive the trigger switch to send a close signal to the water inlet solenoid valve and an open signal to the air inlet solenoid valve, so that the water inlet passage is closed and the air inlet passage is open, in order to perform a residual water emptying operation; the first preset water level is lower than the second preset water level.

2. The filter element auxiliary system according to claim 1, characterized in that, The water circuit assembly includes a water pump; the input end of the water pump is used to connect to an external water source, and the output end of the water pump is connected to the inlet of the filter element; And / or, the air path assembly includes an air pump; the input end of the air pump is used to connect to an external air source, and the output end of the air pump is connected to the filter element inlet.

3. The filter element auxiliary system according to claim 2, characterized in that, The water circuit assembly also includes a water circuit check valve, which is disposed on the first connection passage between the output end of the water pump and the inlet of the filter element. And / or, the air circuit assembly further includes an air circuit one-way valve, which is disposed on the second connection passage between the output end of the air pump and the inlet of the filter element.

4. The filter element auxiliary system according to claim 2, characterized in that, The water circuit assembly also includes a first pressure gauge, the detection end of which is disposed on a first connection passage between the output end of the water pump and the inlet of the filter element, and the first pressure gauge is used to obtain the water pressure of the first connection passage. And / or, the water circuit assembly further includes a second pressure gauge, the detection end of which is disposed on a second connection passage between the output end of the air pump and the inlet of the filter element, and the second pressure gauge is used to obtain the air pressure of the second connection passage.

5. The filter element auxiliary system according to any one of claims 1 to 4, characterized in that, The filter element auxiliary system also includes a backwashing device, which is located inside the filter element body and is used to rinse impurities inside the filter element body.

6. A water purification device, characterized in that, The water purification equipment includes a filter cartridge auxiliary system as described in any one of claims 1 to 5.

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