Filtering device for water purifier and water purifier

Abstract

The utility model provides a filtering device for a water purifier and the water purifier, the filtering device comprises a shell, the shell is provided with a cavity, and the shell is provided with a raw water inlet communicated with the cavity; the filter element is arranged in the cavity, the filter element comprises a filter shell and a purified water cavity located on the inner side of the filter shell, the filter element is provided with a purified water outlet which is communicated with the purified water cavity and communicated to the outside of the shell, and an air bag is arranged in the purified water cavity; the cleaning part is arranged in the shell, the cleaning part is arranged around the filter element, and the cleaning part can rotate and clean the outer side of the filter shell of the filter element. The filter element can be automatically polished through the cleaning part after being used for a period of time, and meanwhile, the air bag is mounted in the filter element, so that full-automatic backwashing can be realized through cooperation of the air bag and the air bag. The cost generated by a service technician on site is reduced, meanwhile, the risks of water leakage and the like possibly caused by self-operation of a user are avoided, meanwhile, the integration degree is higher, and space utilization is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to water purifier field, especially a kind of filter device and water purifier for water purifier. BACKGROUND

[0002] The dirt is formed on the surface of ceramic filter element on market after use for a period of time, and the dirt can form pollution blockage to ceramic filter element, in general, ceramic filter element is disassembled to be manually polished, and the dirt on the surface of ceramic filter element is cleaned by sandpaper or other polishing tool, this method is very inconvenient, and the requirement to operator is also higher, and water leakage accident is easily generated. UTILITY MODEL CONTENTS

[0003] The utility model solves the technical problem that the requirement to operator is also higher in prior art ceramic filter element cleaning, and water leakage accident is easily generated, and provides a kind of filter device and water purifier for water purifier.

[0004] The utility model solves the above technical problem by the following technical scheme:

[0005] A kind of filter device for water purifier, it is characterized by comprising:

[0006] Shell, the shell has cavity, the shell is provided with raw water inlet communicating the cavity on it;

[0007] Filter element, the filter element is set in the cavity, the filter element includes filter shell and the water purification cavity located in the filter shell inner side, the filter element is provided with water purification outlet that is communicated with the water purification cavity and leads to the shell outside, air bag is arranged in the water purification cavity;

[0008] Cleaning part, the cleaning part is set in the shell, the cleaning part is arranged around the filter element, the cleaning part can rotate and clean the filter shell outer side of the filter element.

[0009] In the scheme, by the cooperation of the above structure, the cleanable part and air bag, the filter element can be automatically polished by the cleanable part after use for a period of time, and the air bag is also installed in the interior of filter element, when drain electromagnetic valve is opened, and water inlet electromagnetic valve is closed, air bag will be freely released due to the release of external pressure, and the water purification in the interior of filter element is extruded, the water purification that is extruded can be backwashed to filter element, and the complete automatic backwash can be realized by the cooperation of the two, the cost generated by service technician on-site is solved, and the risk such as water leakage caused by user self-operation is avoided, and the integration is higher, and the space utilization is better.

[0010] Preferably, the cleaning part comprises a cylinder and a cleaning brush, the cylinder is arranged around the filter core, and the cleaning brush is arranged on the surface of the cylinder towards the filter core.

[0011] In the scheme, the above structure is adopted, the cylinder is arranged around the filter core, the cleaning brush is arranged on the inner side of the cylinder and extends out of the filter core, the cylinder is rotatable, and when the cylinder rotates, the cleaning brush can move along the surface of the filter core and clean the dirt on the surface of the filter core.

[0012] Preferably, the filter device further comprises a motor and a rotating shaft, the rotating shaft is in transmission connection with the cylinder, and the motor drives the cylinder to rotate through the rotating shaft.

[0013] In the scheme, the above structure is adopted, the motor drives the rotating shaft, the motor can drive the annular brush inside the filter core to rotate forward and reverse, so as to achieve the purpose of cleaning.

[0014] Preferably, the rotating shaft penetrates through the filter core, the rotating shaft has a hollow inner cavity which is in communication with the clean water cavity, and the clean water cavity is in communication with the clean water outlet through the hollow inner cavity.

[0015] In the scheme, the above structure is adopted, the rotating shaft also serves as the central pipe of the filter core, and the clean water is led out of the filter core through the rotating shaft, so as to improve the integration.

[0016] Preferably, the motor is arranged on the top of the shell, the filter device comprises a top cover, the top cover is detachably connected with the shell to close or open the cavity, and the motor is fixed on the top cover.

[0017] In the scheme, the above structure is adopted, the motor is arranged on the top cover and connected with the top cover, so that the motor can better drive the rotating shaft and is convenient for dismounting, replacing and maintaining.

[0018] Preferably, the rotating shaft comprises a plurality of through holes which are distributed along the length direction of the rotating shaft, and the clean water in the clean water cavity flows into the hollow inner cavity through the through holes; and / or

[0019] The rotating shaft comprises a water outlet hole which is arranged at the bottom end of the rotating shaft and is located outside the filter core and connected with the clean water outlet.

[0020] In the scheme, the above structure is adopted, the clean water in the filter core flows into the hollow inner cavity of the rotating shaft through the through holes arranged on the rotating shaft, flows in the hollow inner cavity, flows out of the filter core and is guided to the clean water outlet through the water outlet hole at the bottom of the rotating shaft, the connection between the clean water cavity inside the filter core and the clean water outlet is realized by using the rotating shaft, and the integration is further improved.

[0021] Preferably, the shell is provided with a sewage outlet at the bottom.

[0022] In the present scheme, by adopting the above structure, the dirt on the surface of the filter element after being cleaned by the cleaning part can be discharged from the cavity of the shell through the dirt discharge port.

[0023] Preferably, the air bag is made of rubber and is internally hollow and filled with gas.

[0024] In the present scheme, by adopting the above structure, the filter element can be in a full state without being affected by external pressure. When the water inlet electromagnetic valve is opened, the filter element starts to produce water, and the filtered clean water flows into the interior of the ceramic filter element. At this time, the clean water compresses the air bag, and the interior of the ceramic filter element stores a certain amount of clean water. When the water discharge electromagnetic valve is opened and the water inlet electromagnetic valve is closed, the external pressure is released, and the air bag is freely released to squeeze out the clean water in the interior of the ceramic filter element. The squeezed-out clean water performs a certain backwashing on the ceramic filter element.

[0025] Preferably, the air bag is annular and has a gap in the middle, and the rotating shaft passes through the gap.

[0026] In the present scheme, by adopting the above structure, the rotating shaft of the cleaning part cooperates with the air bag to improve the integration.

[0027] A water purifier, characterized in that it comprises the filter device for the water purifier as described above.

[0028] In the present scheme, by adopting the above structure, the filter device of the water purifier cooperates with the cleanable part and the air bag. After the filter element is used for a period of time, the cleanable part can automatically polish the filter element. Meanwhile, the air bag is installed in the interior of the filter element. When the water discharge electromagnetic valve is opened and the water inlet electromagnetic valve is closed, the external pressure is released, and the air bag is freely released to squeeze out the clean water in the interior of the filter element. The squeezed-out clean water performs a certain backwashing on the filter element. Through the cooperation of the two, complete automatic backwashing can be achieved. The cost of service technicians going to the door is solved, and the risk of water leakage caused by user self-operation is avoided. Meanwhile, the integration is higher, and the space utilization is better.

[0029] The positive progress effect of the present utility model is that: the water purifier and the filter device cooperate with the cleanable part and the air bag. After the filter element is used for a period of time, the cleanable part can automatically polish the filter element. Meanwhile, the air bag is installed in the interior of the filter element. When the water discharge electromagnetic valve is opened and the water inlet electromagnetic valve is closed, the external pressure is released, and the air bag is freely released to squeeze out the clean water in the interior of the filter element. The squeezed-out clean water performs a certain backwashing on the filter element. Through the cooperation of the two, complete automatic backwashing can be achieved. The cost of service technicians going to the door is solved, and the risk of water leakage caused by user self-operation is avoided. Meanwhile, the integration is higher, and the space utilization is better. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 Structure diagram of the water purifying device.

[0031] Figure 2 Structure diagram of the water purifying device.

[0032] Figure 3 Structure diagram of the cleaning part.

[0033] Figure 4 Structure diagram of the cleaning part.

[0034] Figure 5 Structure diagram of the central pipe of the rotating shaft.

[0035] Figure 6 Structure diagram of the central pipe of the rotating shaft.

[0036] Figure 7 Structure diagram of the filter element.

[0037] Explanation of reference signs:

[0038] Housing 10

[0039] Motor 20

[0040] Raw water inlet 11

[0041] Water outlet 12

[0042] Sewage outlet 13

[0043] Transmission shaft 21

[0044] Top cover 111

[0045] Shaft seal 211

[0046] Cleaning part 14

[0047] Cylinder body 141

[0048] Cleaning brush 142

[0049] Filter element 15

[0050] Filter shell 151

[0051] Central pipe 152

[0052] Groove structure 1521

[0053] Through hole 1522

[0054] Water outlet 1523 DETAILED DESCRIPTION

[0055] A preferred embodiment is described below in conjunction with the accompanying drawings so as to provide a thorough and complete disclosure of the present application.

[0056] As Figure 1 shown, the present embodiment provides a filter device for water purifier, which comprises a shell 10, a filter core 15 and a cleaning part 14. The shell 10 has a cavity, and the shell 10 is provided with a raw water inlet 11 communicating with the cavity. The filter core 15 is arranged in the cavity, and the filter core 15 comprises a filter shell 151 and a purified water cavity on the inner side of the filter shell 151. The filter core 15 is provided with a purified water outlet 12 communicating with the purified water cavity and leading to the outside of the shell 10, and a gas bag is arranged in the purified water cavity. The cleaning part 14 is arranged in the shell 10, and the cleaning part 14 surrounds the filter core 15. The cleaning part 14 can rotate and clean the outer side of the filter shell 151 of the filter core 15.

[0057] The shell 10 is respectively provided with the raw water inlet 11, the purified water outlet 12 and a sewage outlet 13. The raw water inlet 11 is provided with a water inlet electromagnetic valve for controlling opening and closing. The purified water outlet 12 is provided with a water outlet electromagnetic valve for controlling opening and closing. The sewage outlet 13 is provided with a sewage electromagnetic valve

[0058] As Figure 7 shown, the filter device is a multi-layer structure, and a ceramic filter core 15 is adopted. The ceramic filter core 15 belongs to porous ceramic, and has the characteristics of high separation efficiency, energy saving, stable structure and easy regeneration. The filter shell 151 of the filter core 15 is provided with filter holes of different sizes (not shown in the figure). Water first enters the shell 10 of the filter device, and then enters the purified water cavity in the filter core 15 through the filter holes on the filter shell 151 of the filter core 15, and in this process, the suspended matter, colloidal matter, bacteria, algae, heavy metals and organic pollutants and other harmful components in the water are filtered through the porous structure. The ceramic filter core 15 can restore the flux by simple mechanical brushing, and there is no deep pollution and pore blockage, which effectively prevents the re-pollution of purified water. The cleaning part 14 is used for mechanically brushing the surface of the ceramic filter core 15.

[0059] Through the cooperation of the cleanable part 14 and the gas bag, the filter core 15 can be automatically polished by the cleanable part 14 after being used for a period of time. Meanwhile, the gas bag is also installed in the inside of the filter core 15. When the water outlet electromagnetic valve is opened and the water inlet electromagnetic valve is closed, the gas bag will be freely released due to the release of external pressure, so as to squeeze out the purified water in the inside of the filter core 15. The squeezed out purified water will perform a certain backwashing on the filter core 15. Through the cooperation of the two, complete automatic backwashing can be achieved. The cost of service technicians going to the door is solved, and the risk of water leakage caused by user self-operation is also avoided. Meanwhile, the integration is higher, and the space utilization is better.

[0060] As Figures 2 to 4As shown, the cleaning part 14 includes a cylinder 141 and a cleaning brush 142, the cylinder 141 is arranged around the filter core 15, and the cleaning brush 142 is arranged on the surface of the cylinder 141 towards the filter core 15. The cleaning part 14 is a kind of annular brush, which has the cylinder 141 as the external framework, and the brush inside the cylinder 141 is the cleaning brush 142, which is made of nylon material. The brush is arranged along the length direction of the filter core 15 to ensure that the sweeping path of the brush covers the whole surface of the filter core 15 when the cylinder 141 rotates.

[0061] Through this structure, the cylinder 141 surrounds the filter core 15, and the cleaning brush 142 is arranged inside the cylinder 141 and extends out of the filter core 15. The cylinder 141 can rotate, and when the cylinder 141 rotates, the cleaning brush 142 can move along the surface of the filter core 15 and clean the dirt on the surface of the filter core 15 to achieve cleaning.

[0062] As shown, Figure 2 The filter device further includes a motor 20 and a rotating shaft, the rotating shaft is in transmission connection with the cylinder 141, and the motor 20 drives the cylinder 141 to rotate through the rotating shaft. In this embodiment, the cleaning part 14 is driven to rotate by the motor 20. The motor 20 drives the rotating shaft to rotate the cylinder 141, and further drives the annular brush inside the filter core 15 to rotate forward and reverse, so as to achieve the purpose of cleaning. The rotating shaft penetrates through the filter core 15, and the rotating shaft has a hollow inner cavity communicating with the clean water cavity. The clean water cavity communicates with the clean water outlet 12 through the hollow inner cavity. The rotating shaft also includes the center pipe 152 of the filter core 15, and the clean water is led out of the filter core 15 through the rotating shaft, which improves the integration.

[0063] As shown, Figure 2 The motor 20 is arranged on the top of the shell 10, and the filter device includes a top cover 111 which is detachably connected with the shell 10 to close or open the cavity. The motor 20 is fixed on the top cover 111. The motor 20 is arranged on the top cover 111 and connected with the top cover 111, so that the motor 20 can better drive the rotating shaft and is convenient for disassembly, replacement and maintenance. The bottom of the motor 20 includes a fixed foot which can fix the motor 20 on the top cover 111 to prevent it from shaking in other directions.

[0064] Specifically, the rotating shaft includes a transmission shaft 21 of the motor 20, which can provide a rotating torque to drive the annular brush to rotate correspondingly. A shaft seal 211 can seal the transmission shaft 21 to prevent water from overflowing. The top cover 111 has a fixing structure on the top to fix the motor 20, and the shaft center of the top cover 111 also has a through hole 1522 to install the shaft seal 211 and make the transmission shaft 21 pass through. The center pipe 152 of the filter core 15 has a groove structure 1521 at one end to fix the transmission shaft 21 of the motor 20, and also has a smooth sealing surface to connect the shaft seal 211.

[0065] As Figure 5 , Figure 6 shown, the rotating shaft includes a plurality of through holes 1522 distributed along the length direction thereof, and the purified water in the purified water cavity flows into the hollow inner cavity through the through holes 1522; the rotating shaft includes a water outlet hole arranged at the bottom end thereof, and the water outlet hole is located outside the filter core 15 and is connected with the purified water outlet 12. The purified water inside the filter core 15 enters the hollow inner cavity of the rotating shaft through the through holes 1522 arranged on the rotating shaft, flows in the hollow inner cavity, and flows out to the outside of the filter core 15 and is guided to the purified water outlet 12 from the water outlet 1523 at the bottom of the rotating shaft, so that the connection between the purified water cavity inside the filter core 15 and the purified water outlet 12 is completed by using the rotating shaft, and the integration is further improved. Specifically, the center pipe 152 of the filter core 15 of the rotating shaft is connected with the ceramic filter core 15, and the inside of the center pipe 152 has a plurality of through holes 1522, so that the filtered purified water can flow out.

[0066] As Figure 1 , Figure 2 shown, the shell 10 is provided with a sewage outlet 13 at the bottom. By arranging the sewage outlet 13, the stains on the surface of the filter core 15 after being cleaned by the cleaning part 14 can be discharged from the cavity of the shell 10.

[0067] In this embodiment, the air bag is made of rubber and is filled with gas inside. Under the action of the internal gas pressure, the air bag is in a full state without external pressure. When the water inlet electromagnetic valve is opened, the filter core 15 starts to produce water at this time, and the filtered purified water flows into the inside of the ceramic filter core 15. At this time, the purified water compresses the air bag, and then a certain amount of purified water is stored in the inside of the ceramic filter core 15. When the water outlet electromagnetic valve is opened and the water inlet electromagnetic valve is closed, the external pressure is released, and then the air bag is free to release, so as to squeeze out the purified water in the inside of the ceramic filter core 15. The squeezed-out purified water can perform a certain backwashing on the ceramic filter core 15.

[0068] In this embodiment, the air bag is annular and has a gap in the middle, and the rotating shaft passes through the gap. The gap in the middle makes the rotating shaft of the cleaning part 14, specifically the center pipe 152 of the filter core 15, cooperate with the air bag to improve the integration.

[0069] In this embodiment, through the cooperative matching of the air bag and the cleaning part 14, on the one hand, the surface of the ceramic filter core 15 is cleaned by the brush driven by the motor 20 to rotate in reverse, and on the other hand, the ceramic filter core 15 is backwashed by the air bag, so as to achieve the purpose of automatically cleaning the ceramic filter core 15.

[0070] The embodiment also provides a water purifier, which comprises the filtering device for the water purifier. The filtering device for the water purifier is matched with the cleanable part 14 and the air bag, so that the filter element 15 can be automatically polished through the cleanable part 14 after being used for a period of time, and the air bag is also installed in the filter element 15. When the water outlet electromagnetic valve is opened and the water inlet electromagnetic valve is closed, the air bag is freely released due to the release of external pressure, so that the purified water in the filter element 15 is squeezed out, the purified water that is squeezed out performs a certain backwashing on the filter element 15, and the complete automatic backwashing is realized through the cooperation of the two. The cost of the service technician's on-site service is solved, the risk of water leakage caused by the user's self-operation is avoided, the integration is higher, and the space utilization is better.

Claims

1. A filtration device for a water purifier, characterized in that, It includes: A housing having a cavity, and a raw water inlet communicating with the cavity is provided on the housing; The filter element is disposed in the cavity. The filter element includes a filter shell and a water purification chamber located inside the filter shell. The filter element is provided with a water purification outlet that communicates with the water purification chamber and leads to the outside of the shell. An air bladder is disposed inside the water purification chamber. A cleaning section is disposed within the housing and surrounds the filter element. The cleaning section is capable of rotating to clean the outer side of the filter housing of the filter element.

2. The filtration device for a water purifier as described in claim 1, characterized in that, The cleaning unit includes a cylindrical body and a cleaning brush. The cylindrical body is arranged around the filter element, and the cleaning brush is disposed on the surface of the cylindrical body facing the filter element.

3. The filtration device for a water purifier as described in claim 2, characterized in that, The filtration device also includes a motor and a rotating shaft, the rotating shaft being connected to the cylinder in a transmission manner, and the motor driving the cylinder to rotate via the rotating shaft.

4. The filtration device for a water purifier as described in claim 3, characterized in that, The rotating shaft passes through the filter element, and the rotating shaft has a hollow inner cavity that connects to the water purification chamber. The water purification chamber is connected to the water purification outlet through the hollow inner cavity.

5. The filtration device for a water purifier as described in claim 3, characterized in that, The motor is located on the top of the housing, and the filter device includes a top cover that is detachably connected to the housing to close or open the cavity. The motor is fixed to the top cover.

6. The filtration device for a water purifier as described in claim 4, characterized in that, The rotating shaft includes a plurality of through holes distributed along its length, through which purified water in the water purification chamber flows into the hollow inner cavity; and / or The rotating shaft includes a water outlet at its bottom end, which is located outside the filter element and connected to the purified water outlet.

7. The filtration device for a water purifier as described in claim 1, characterized in that, The bottom of the casing has a drain port.

8. The filtration device for a water purifier as described in claim 1, characterized in that, The airbag is made of rubber and is hollow inside and filled with gas.

9. The filtration device for a water purifier as described in claim 3, characterized in that, The airbag is ring-shaped with a notch in the middle, and the rotating shaft passes through the notch.

10. A water purifier, characterized in that, It includes a filtration device for a water purifier as described in any one of claims 1 to 9.

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