Filtering assembly and water purifying equipment

Abstract

The utility model discloses a filter assembly and water purification equipment, and relates to the technical field of water purification equipment, the filter assembly comprises a filter bottle; a filter element; the separator is provided with an air bag cavity, and the air bag cavity is communicated with the filter element; the air bag part is arranged in the air bag cavity in a sealing manner; wherein the air bag part comprises a sealing part and a compression part, the compression part is provided with a plurality of folds, the partition part comprises a first barrel body and a second barrel body, the first barrel body and the second barrel body define the air bag cavity, and the sealing part is connected between the first barrel body and the second barrel body in a pressed mode; according to the technical scheme provided by the utility model, the air bag part is used for washing the interior of the reverse osmosis filter element from the water inlet end or the water outlet end of the filter element, so that the TDS value of water retained in the filter assembly is reduced, and a first cup of water has a lower TDS value when the whole filter assembly is used for producing water again.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification equipment, in particular to a filtering component and a water purification equipment. Background Art

[0002] In the existing water purification equipment, common filters are used to filter water. In order to reduce the overall volume of the water purification equipment, filters with different functions are integrated and compounded into one, and the commonly used composite filter is generally a 3-stage or 4-stage filter; the composite filter generally includes a pre-filter for filtering large particles such as flocs, a reverse osmosis filter for reducing the salt ion concentration in water and filtering microorganisms, and a post-filter for improving the taste of purified water.

[0003] However, when the water purification equipment stops operating, the water that has entered the water purification equipment will remain in the flow path of the water purification equipment; when the reverse osmosis filter is in a static state, the ion concentrations on both sides of the reverse osmosis filter will tend to balance, that is, the ion concentration of the pure water remaining in the reverse osmosis filter and that has been filtered by the reverse osmosis filter will increase (referred to as too high TDS in the field of water purification equipment), so that when the user takes water again, the TDS value of the first glass of water is too high. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose a filtering component, aiming to reduce the TDS value of the first glass of water when the water purification equipment operates again.

[0005] To achieve the above object, the filtering component proposed by the utility model includes

[0006] A filter bottle;

[0007] A filter element, which is arranged in the filter bottle;

[0008] A separator, which is arranged in the filter bottle and at the bottom of the filter element. The separator is provided with an airbag cavity, and the airbag cavity is communicated with the filter element;

[0009] An airbag member, which is hermetically arranged in the airbag cavity;

[0010] Wherein, the airbag member includes a sealing part and a compression part. The compression part has a plurality of folds. The separator includes a first barrel and a second barrel. The first barrel and the second barrel surround to form the airbag cavity. The sealing part is pressed between the first barrel and the second barrel, and the first barrel and the second barrel are hermetically connected.

[0011] In an embodiment, the compression part is arranged in the first barrel, and the compression part is extruded and deformed towards the second barrel when the water pressure in the filter bottle increases.

[0012] In one embodiment, the first barrel body is disposed at the bottom of the filter element, and the compression portion is compressed and deformed towards the bottom of the filter bottle when the water pressure in the filter bottle increases.

[0013] In one embodiment, the first barrel body is disposed between the filter element and the second barrel body. A fixing ring is disposed on the outer periphery of the second barrel body, and the fixing ring is used for connecting with the first barrel body. A crimping groove is formed by recessing the end face of the fixing ring facing the first barrel body, and the sealing portion is crimped in the crimping groove.

[0014] In one embodiment, the end of the first barrel body is crimped with the sealing portion in the crimping groove.

[0015] In one embodiment, a connecting portion is formed on the fixing ring, and the connecting portion is used for hermetically connecting with the outer periphery of the first barrel body.

[0016] In one embodiment, the connecting portion has a first inclined surface, and a second inclined surface is disposed on the outer periphery of the first barrel body. The first inclined surface is welded to the second inclined surface.

[0017] In one embodiment, the top end of the connecting portion protrudes from the end face of the second barrel body.

[0018] In one embodiment, a connecting ring welded to the connecting portion is disposed on the outer periphery of the first barrel body.

[0019] In one embodiment, a cavity is formed by recessing the side surface of the connecting ring facing the connecting portion, and the cavity is used for accommodating debris generated during welding.

[0020] In one embodiment, a plurality of limiting portions for limiting the position of the airbag member are disposed in the first barrel body.

[0021] The present utility model further provides a water purification device, including the above-mentioned filtration assembly.

[0022] The technical solution of the present utility model flushes the inside of the reverse osmosis filter element from the water inlet end or the water outlet end of the filter element by using the airbag member, so that the water that has passed through the reverse osmosis filter element can be used to dilute or even discharge the water that has not passed through the reverse osmosis filter element, thereby reducing the ion concentration of the water that has not passed through the reverse osmosis filter element, that is, reducing the TDS value of the water remaining in the filtration assembly, so that the first glass of water produced by the filtration assembly as a whole has a lower TDS value when making water again. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0024] Figure 1 Schematic diagram of the overall structure of the filter assembly provided by the present invention;

[0025] Figure 2 Cross-sectional view of the filter assembly of the present invention;

[0026] Figure 3 Cross-sectional view of the partition member and the airbag member in the present invention;

[0027] Figure 4 Exploded view of the partition member and the airbag member of the present invention;

[0028] Figure 5 Exploded view of the partition member and the airbag member of the present invention from another perspective;

[0029] Figure 6 Exploded view of the partition member and the airbag member of the present invention from yet another perspective.

[0030] Explanation of the reference numerals in the drawings:

[0031] 1. Filter bottle; 11. Filter element; 12. Open end; 13. End cap; 2. Partition member; 21. First barrel; 211. Second inclined surface; 212. Connecting ring; 213. Cavity; 214. Water passing hole; 215. Limiting portion; 22. Second barrel; 221. Fixed ring; 222. Crimping groove; 223. Connecting portion; 224. First inclined surface; 23. Airbag cavity; 24. Airbag member; 241. Sealing portion; 242. Compression portion; 242a. Fold; 243. Contact protrusion.

[0032] The realization of the purpose, functional features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the drawings. Detailed implementation manners

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0034] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, such directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0035] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0036] Total dissolved solids (English: Total dissolved solids, abbreviated as TDS), also known as the total amount of dissolved solids, is measured in milligrams per liter (mg / L), which indicates how many milligrams of dissolved solids are dissolved in 1 liter of water. The higher the TDS value, the more dissolved substances are contained in the water.

[0037] In existing water purification devices, generally filters are used to filter water; currently, the miniaturized design of water purification devices can save more indoor space, so the miniaturized design of water purification devices has become a trend; and in order to reduce the overall volume of the water purification device, filters with different functions are integrated and compounded into one, and the composite filters used are generally 3-stage or 4-stage filters; the composite filter generally includes a pre-filter for filtering large particles such as flocs, a reverse osmosis filter for reducing the salt ion concentration in water and filtering microorganisms, and a post-filter for improving the taste of the purified water.

[0038] When the water purification device stops operating, the water that has entered the water purification device will remain in the flow path of the water purification device; when the reverse osmosis filter is in a static state, the ion concentrations on both sides of the reverse osmosis filter will tend to balance, that is, the ion concentration of the pure water remaining in the reverse osmosis filter and that has been filtered by the reverse osmosis filter will increase (referred to as too high TDS in the field of water purification devices), so that when the user takes water again, the TDS value of the first glass of water is too high.

[0039] Refer to Figures 1 to 3, to solve the above problems, that is, to reduce the TDS value of the first glass of water when the water purification device restarts working, the present utility model provides a filtering component, which includes a filter bottle 1, a filter element 11 and a separator 2; wherein, the filter element 11 is arranged in the filter bottle 1, and the separator 2 is also arranged in the filter bottle 1 and located at the bottom of the filter element 11, and the separator 2 is hollow to form an airbag cavity 23, and an airbag member 24 is hermetically arranged in the airbag cavity 23; specifically, the separator 2 includes a first barrel 21 and a second barrel 22; the first barrel 21 and the second barrel 22 enclose to form the airbag cavity 23; the airbag member 24 includes a sealing part 241 and a compression part 242, the sealing part 241 and the compression part 242 are integrally formed, and the sealing part 241 is press-fitted between the second barrel 22 and the first barrel 21; in the present utility model, the airbag cavity 23 communicates with the filter element 11, and during the filtering process of the filter element 11, since the water entering the filter element 11 has a certain water pressure, and the sealing part 241 of the airbag member 24 is hermetically arranged between the first barrel 21 and the second barrel 22, so water will enter the airbag cavity 23 during the water filtering process and cause the compression part 242 to compress or expand; when the filtering process stops, the airbag member 24 has the ability to restore its original shape, that is, the compression part 242 of the airbag member 24 will press the water back into the filter element 11 again, that is, the water that has been filtered by the filter element 11 is forced back into the filter element 11 again, thereby reducing the ion concentration in the filter element 11, and further reducing the overall ion concentration level in the filter element 11 after the filter element 11 stops working, so as to reduce the TDS value of the first glass of water.

[0040] It should be noted that the airbag member 24 is made of a material with good elastic deformation ability, such as rubber, so that the airbag member 24 has a tendency to return to its original state after expansion or compression, so as to squeeze the water from the airbag cavity 23 back into the filter element 11; in the water purification equipment, water is always filtered by the reverse osmosis filter element 11 first, and then passes to the post-filter element 11 for filtration, and the filter element 11 described in the utility model is a general term, that is, the filter element 11 in the utility model can be both a reverse osmosis filter element 11, It can also be a post-filter element 11; it should be noted that no matter the filter element 11 in the present invention is a reverse osmosis filter element 11 or a post-filter element 11, in actual use, the airbag 24 forces the water that has been filtered by the reverse osmosis filter element 11 back to the water inlet end of the reverse osmosis filter element 11 to achieve the effect of reducing the TDS value of the first cup of water; specifically, if the airbag 24 is arranged at the bottom of the reverse osmosis filter element 11, the airbag cavity 23 is actually connected to the water outlet end of the reverse osmosis filter element 11, and when the purified water When the equipment stops working, the airbag 24 relies on its own elasticity to restore its original state, thereby forcing the water in the airbag cavity 23 back into the reverse osmosis filter element 11, that is, the water with extremely low ion concentration after being filtered by the reverse osmosis filter element 11 will pass through the reverse osmosis filter element 11 through the water outlet end of the reverse osmosis filter element 11 and return to the water inlet end of the reverse osmosis filter element 11, thereby reducing the ion concentration at the water inlet end of the reverse osmosis filter element 11 and reducing the TDS value of the first cup of water after the water purification equipment is restarted; similarly, if the airbag 24 is arranged at the bottom of the post-filter element 11, and the airbag cavity 23 can be communicated with the water inlet end of the post-filter element 11, and can also be communicated with the water outlet end of the post-filter element 11. In fact, both are communicated with the water outlet end of the reverse osmosis filter element 11. When the water purification equipment stops working, the airbag element 24 returns to its original state to force the water in the airbag cavity 23 back to the water inlet end of the reverse osmosis filter element 11, thereby reducing the ion concentration at the water inlet end of the reverse osmosis filter element 11 and reducing the TDS value of the first cup of water after the water purification equipment is restarted.

[0041] Reference Figures 2 to 4 According to the above description, the compression part 242 of the airbag member 24 is actually deformed according to the change of water pressure during the working process of the water purification device, that is, the compression part 242 is equivalent to storing pressure during the working process of the water purification device, and releasing the pressure when the water purification device stops working, so as to force the water filtered by the reverse osmosis filter element 11 back to the water inlet end of the reverse osmosis filter element 11. The compression part 242 actually divides the airbag cavity 23 into two parts, one part of the airbag cavity 23 is used to store water, and the air pressure in the remaining part of the airbag cavity 23 will change due to the deformation of the compression part 242, thereby giving the airbag member 24 a tendency to restore to its original state in addition to its own elasticity when the water purification device stops working; therefore, in order to produce changes in air pressure in the airbag cavity 23 with changes in the compression part 242, the airbag member 24 needs to have good air tightness.

[0042] ReferenceFigures 3 to 6 , for this reason, the sealing portion 241 of the airbag member 24 can utilize the connection between the second barrel 22 and the first barrel 21 to provide a good sealing effect for the airbag member 24; the sealing portion 241 and the compression portion 242 can be made of the same material with deformation ability. When the second barrel 22 and the first barrel 21 are connected, the sealing portion 241 is actually sandwiched between the second barrel 22 and the first barrel 21, that is, the sealing portion 241 will deform when the second barrel 22 and the first barrel 21 are connected to fill the gap between the second barrel 22 and the first barrel 21, thereby providing a seal between the second barrel 22 and the first barrel 21, that is, providing a seal for the airbag cavity 23; in addition, since the sealing portion 241 is actually sandwiched between the second barrel 22 and the first barrel 21, when the compression portion 242 is squeezed or expanded due to the change of water pressure, the sealing portion 241 is not easily detached from between the second barrel 22 and the first barrel 21, and thus the sealing portion 241 can maintain a good sealing effect.

[0043] Correspondingly, in order to improve the compression effect of the compression portion 242, that is, to enable the compression portion 242 to be fully compressed or expanded in the airbag cavity 23, the compression portion 242 has a number of pleats 242a. The setting of the pleats 242a enables the compression portion 242 to have a stronger deformation ability, so as to cope with a greater water pressure, and the setting of the pleats 242a also improves the ductility of the compression portion 242, further reducing the possibility of mechanical fatigue and damage of the compression portion 242 due to repeated compression or expansion and then rebound.

[0044] Refer to Figures 3 to 6 , it should be noted that, in order to cooperate with the setting of the compression portion 242, the setting that the first barrel 21 and the second barrel 22 enclose to form the airbag cavity 23 actually expands the actual volume of the airbag cavity 23, so that more air can be accommodated in the airbag cavity 23, thereby increasing the upper limit of the water pressure that the airbag cavity 23 can bear; from another perspective, more water can also be accommodated in the airbag cavity 23, so that when the water purification device stops working, the compression portion 242 can return more water pressure to the water inlet end of the reverse osmosis filter element 11, further reducing the TDS value at the water inlet end of the reverse osmosis filter element 11, and thus further reducing the TDS value of the first glass of water after the water purification device is restarted.

[0045] Refer to Figures 3 to 6, in the present utility model, the compression part 242 is arranged inside the first barrel body 21. When the whole water purification device works, that is, when the water pressure in the filter bottle 1 increases, the compression part 242 deforms towards the second barrel body 22. Considering the characteristics of the compression part 242, or the airbag part 24 as a whole, that is, after the airbag part 24 itself has wrinkles 242a, it is more suitable to squeeze it rather than make it expand. The second barrel body 22 can be arranged at the bottom of the first barrel body 21, that is, the first barrel body 21 is arranged between the filter element 11 and the second barrel body 22. And in order to complete the connection between the airbag cavity 23 and the filter element 11, a plurality of water passing holes 214 are opened at the top of the first barrel body 21. Thus, the water at the filter element 11 can directly enter the airbag cavity 23 through the water passing holes 214. When the water pressure in the filter bottle 1 increases, the direction where the second barrel body 22 is located is squeezed and deformed. That is, after the whole filtering assembly starts to work, water enters the airbag cavity 23 from the first barrel body 21, and then the airbag part 24 will be squeezed towards the direction where the second barrel body 22 is located. The above-mentioned position settings of the first barrel body 21, the second barrel body 22 and the compression part 242 can give full play to the deformation ability of the compression part 242. And because it is a squeezing method, compared with making the compression part 242 expand, the possibility that the wrinkles 242a on the compression part 242 are damaged due to excessive stretching is reduced, ensuring the structural integrity of the airbag part 24 as a whole.

[0046] Referring to Figures 3 to 6 , based on the above, since the sealing part 241 is arranged between the first barrel body 21 and the second barrel body 22, the airtightness of the airbag part 24 depends on the firm fixing degree between the first barrel body 21 and the second barrel body 22. In the present utility model, the first barrel body 21 and the second barrel body 22 are rotationally welded, thus fully reducing the possibility that the first barrel body 21 and the second barrel body 22 are separated due to water pressure impact, and further reducing the possibility that the airbag part 24 fails due to insufficient airtightness.

[0047] Specifically, a fixing ring 221 is arranged on the outer periphery of the second barrel body 22. The fixing ring 221 is used to connect with the first barrel body 21. And a crimping groove 222 is formed by the end face of the fixing ring 221 facing the first barrel body 21 being recessed. The sealing part 241 is crimped in the crimping groove 222. That is, when the first barrel body 21 and the second barrel body 22 are connected, the end of the first barrel body 21 is crimped with the sealing part 241 in the crimping groove 222. Further, the inner diameter of the first barrel body 21 is larger than the outer diameter of the second barrel body 22. Therefore, the end of the first barrel body 21 can crimp the sealing part 241 in the crimping groove 222. Thus, the fixing ring 221 is actually connected to the outer periphery of the first barrel body 21. After the fixing ring 221 and the first barrel body 21 are connected, the end of the first barrel body 21 will keep in contact with the sealing part 241. And due to the crimping, the sealing part 241 will produce a certain deformation, thereby ensuring the airtightness of the airbag part 24.

[0048] Referring toFigures 3 to 6 , correspondingly, since the crimping groove 222 is formed by recessing, the height of the bottom of the crimping groove 222 in the vertical direction is actually lower than that of the second barrel body 22. It can be simply understood that the mouth of the second barrel body 22 actually extends into the first barrel body 21. Thus, when the sealing portion 241 is fixedly crimped in the crimping groove 222, a part of the compression portion 242 will be embedded between the first barrel body 21 and the second barrel body 22, that is, the cooperation between the inner wall of the first barrel body 21 and the outer wall of the second barrel body 22 will limit the compressible space and position of the compression portion 242. Therefore, the inner wall of the first barrel body 21 and the outer wall of the second barrel body 22 actually play a certain limiting and protective role on the compression portion 242.

[0049] In the present utility model, a connecting portion 223 is formed on the fixing ring 221, and the connecting portion 223 is used for hermetically connecting with the outer periphery of the first barrel body 21; that is, the connecting portion 223 has a first inclined surface 224, and a second inclined surface 211 is formed on the outer periphery of the first barrel body 21. The first inclined surface 224 and the second inclined surface 211 are rotationally heat-melt connected; the arrangement of the first inclined surface 224 and the second inclined surface 211 increases the contact surface when the first barrel body 21 and the second barrel body 22 are rotationally heat-melt connected to each other, that is, it expands the connection surface between the two, making the connection between the two more stable. At the same time, the arrangement of the first inclined surface 224 and the second inclined surface 211 also facilitates the rotational heat-melting connection between the two; it should be noted that due to the particularity of the rotational heat-melting process, a certain margin must be left between the first inclined surface 224 and the second inclined surface 211.

[0050] Refer to Figures 3 to 6 , correspondingly, the top end of the connecting portion 223 protrudes from the end surface of the second barrel body 22. Thus, a part of the first inclined surface 224 will necessarily protrude from the end surface of the second barrel body 22 to connect with the first barrel body 21; in order to further improve the integrity of the first barrel body 21 and the second barrel body 22, that is, to further improve the connection strength between the first barrel body 21 and the second barrel body 22 while ensuring the connection strength between the first inclined surface 224 and the second inclined surface 211, a connecting ring 212 is provided on the outer periphery of the first barrel body 21, and the connecting ring 212 is rotationally heat-melt connected with the connecting portion 223. More specifically, the connecting ring 212 is rotationally heat-melt connected with the top end of the connecting portion 223; the arrangement of the connecting ring 212 provides an additional fixation between the first barrel body 21 and the second barrel body 22 on the basis of the connection between the first inclined surface 224 and the second inclined surface 211, making the fixed connection between the first barrel body 21 and the second barrel body 22 more stable, and further improving the sealing performance between the first barrel body 21 and the second barrel body 22.

[0051] Refer to Figures 3 to 6, It should be noted that the setting of the connecting ring 212 can not only improve the stability of the fixed connection between the first barrel 21 and the second barrel 22, but also provide a hint for the rotation and hot melting of the first inclined surface 224 and the second inclined surface 211. Specifically, when the first inclined surface 224 is connected to the second inclined surface 211, the operator actually cannot notice the connection degree between the first inclined surface 224 and the second inclined surface 211, that is, it is impossible to determine the depth of the end of the first barrel 21 embedded in the crimping groove 222. If the end of the first barrel 21 is embedded too deeply in the crimping groove 222, it may cause damage to the structure of the sealing part 241, thereby affecting the airtightness of the airbag part 24 as a whole. Therefore, the setting of the connecting ring 212 can provide a hint for the operator on the outer periphery of the first barrel 21. When the first barrel 21 and the second barrel 22 are rotationally and hot-melt connected, in fact, the hot melting between the first inclined surface 224 and the second inclined surface 211 and the hot melting between the connecting ring 212 and the top of the connecting part 223 are carried out simultaneously. The operator can observe the hot melting state between the connecting ring 212 and the top of the connecting part 223 to infer the hot melting state between the first inclined surface 224 and the second inclined surface 211, so as to infer whether the end of the first barrel 21 is excessively embedded in the crimping groove 222, thereby reducing the possibility of damage to the structure of the sealing part 241 during the connection process of the first barrel 21 and the second barrel 22 and ensuring the sealing performance of the airbag part 24. Further, indicating lines can be provided on the connecting ring 212 and / or the connecting part 223 to make the connection state between the two easier to observe.

[0052] Refer to Figures 3 to 6 , Further, a cavity 213 is formed by the side surface of the connecting ring 212 facing the connecting part 223, and this cavity 213 is used to accommodate the debris that may be generated during rotational hot melting. If the debris remains at the connection between the connecting ring 212 and the top of the connecting part 223 during the connection process, it may affect the connection stability between the connecting ring 212 and the connecting part 223. Therefore, the setting of the cavity 213 can provide accommodation for the debris and reduce the possibility that the debris affects the hot-melt connection between the connecting ring 212 and the connecting part 223.

[0053] It should be noted that considering a series of factors such as the production cost, difficulty and installation convenience, the filter bottle 1 is generally cylindrical, and the filter bottle 1 in the present utility model is roughly cylindrical. Thus, the filter element 11 and the separator 2 are also roughly cylindrical, but the filter bottle 1, the filter element 11 and the separator 2 can also be designed into other shapes according to actual needs, such as roughly rectangular parallelepiped, and can be changed according to actual design and use requirements.

[0054] Considering the general shape of the filter bottle 1, that is, the generally cylindrical shape of the filter bottle 1, in order to pursue the maximum volume of the airbag cavity 23, the partition 2 as a whole is also roughly cylindrical to fit the overall shape of the filter bottle 1; therefore, the connecting portion 223 of the first barrel body 21 and the connecting ring 212 of the second barrel body 22 are also annular to match the overall shape of the partition 2.

[0055] Reference Figures 3 to 6 It should be noted that, considering that the volume in the airbag cavity 23 is certain, and also considering the shapes of the airbag component 24 and the partition 2, that is, the expansion process of the airbag component 24 in the airbag cavity 23 will be restricted by the inner wall of the airbag cavity 23, in the utility model, water enters the airbag cavity 23 and squeezes the airbag component 24; specifically, when the water pressure is relatively large, if the airbag component 24 has expanded to contact with the inner wall of the first barrel 21, and the airbag component 24 still needs to continue to expand to complete the pressure balance on both sides, irregular deformation will occur on the airbag component 24, which will increase the possibility of damage to the airbag component 24 in the long run. Therefore, in the utility model, the airbag component 24 is squeezed to balance the water pressure and air pressure in the airbag cavity 23.

[0056] It should be noted that, considering that the airbag component 24 actually balances the water pressure and air pressure in the airbag cavity 23; that is, when the water pressure in the airbag cavity 23 is greater than the air pressure, the airbag component 24 is compressed; when the water pressure in the airbag cavity 23 is less than the air pressure, the airbag component 24 rebounds; the compression and rebound of the airbag component 24 correspond to the opening and closing of the water purification equipment respectively; further, in order to make the airbag component 24 have a better rebound effect, the airbag component 24 can be compressed during the installation process, that is, the top of the airbag component 24 is pressed against the top of the airbag cavity 23 during the installation process, so that the airbag component 24 has a certain elasticity after the installation is completed, reducing the compression of the airbag component 24 after water passes through the airbag cavity 23, thereby reducing the possibility of the airbag component 24 being damaged due to excessive deformation, thereby ensuring the structural integrity of the airbag component 24. Accordingly, in order to make the deformation of the airbag component 24 during the installation process more uniform, that is, in order to ensure that the airbag component 24 can be evenly stressed at various locations during the installation process, a resistance protrusion is provided at the top of the airbag component 24. The resistance protrusion will resist the top of the airbag cavity 23 during the installation of the airbag component 24. While resisting, the resistance protrusion will evenly transfer force to the airbag component 24, thereby causing the airbag component 24 to deform more evenly, reducing the possibility of uneven deformation of the airbag component 24 during the installation process or the rebound process, and further ensuring the structural integrity and stability of the airbag component 24.

[0057] Reference Figures 3 to 6In addition, considering that the airbag component 24 has a compression portion 242 with a fold 242a, the setting of the abutment protrusion still cannot well ensure the uniform deformation of the airbag component 24; for this reason, a plurality of limiting portions 215 for limiting the position of the airbag component 24 are provided in the first barrel 21. The limiting portions 215 will limit the position of the airbag component 24 so that the airbag component 24 can be kept squeezed or rebounded in the length direction of the partition 2 as much as possible, thereby further ensuring the integrity of the overall structure of the airbag component 24 and improving the service life of the airbag component 24.

[0058] Reference Figure 1 and Figure 2 From the overall structure, the filter element 11, the separator 2 and the airbag 24 need to be installed into the filter bottle 1, so the bottom of the filter bottle 1 has an opening 12, and the opening 12 is used to install the filter element 11, the airbag 24 and the separator 2; the specific installation process is as follows:

[0059] First, place the airbag component 24 in the first barrel body 21, and then confirm that the position of the sealing part 241 is aligned with the position of the port of the first barrel body 21, and then align the crimping groove 222 on the second barrel body 22 with the sealing part 241, and then rotate the first barrel body 21 and the second barrel body 22 to connect them by hot melt. At this point, the partition 2 and the airbag component 24 are installed; further, install the filter element 11 on the top of the partition 2. After the installation is completed, insert the filter element 11 and the partition 2 as a whole into the filter bottle 1. An end cover 13 is also provided at the bottom of the filter bottle 1, and the end cover 13 is used to seal the opening 12; when the filter element 11 and the partition 2 are inserted into the filter bottle 1 as a whole, install the end cover 13 to the bottom of the filter bottle 1 to complete the overall installation of the filter assembly.

[0060] It should be noted that the filter bottle 1, the partition 2 and the end cap 13 are generally made of plastic, so that after the partition 2 and the filter element 11 are installed, the end cap 13 can be fixed to the bottom of the filter bottle 1 by rotation welding, thereby ensuring the sealing between the end cap 13 and the filter bottle 1. In addition, a relevant structure for fixing the filter element 11 and isolating the waterway can be set at the top of the first barrel 21 to ensure that the filter element 11 is not easily damaged or cross-contaminated during the installation process and the filtering process.

[0061] In addition, the rotary hot melt connection and rotary welding in the present invention both refer to rotary melting plastic welding. Rotary melting plastic welding is to use the heat generated by the friction between plastic workpieces to melt the contact surface of the plastic workpieces, and then rely on external pressure and drive to cause the upper and lower workpieces to rotate and solidify into one. Positioning rotary melting is to rotate at a set time and stop at a set position instantly to form a permanent fusion.

[0062] The present utility model further provides a water purification device, which includes the above-mentioned filtration assembly. The specific structure of the filtration assembly refers to the above-mentioned embodiments. Since this water purification device adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated one by one here.

[0063] The above is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. A filtering component, characterized in that, including a filter bottle; a filter element disposed within the filter bottle; a separator disposed within the filter bottle and at the bottom of the filter element, the separator having an airbag cavity communicating with the filter element; an airbag member hermetically disposed within the airbag cavity; wherein the airbag member includes a sealing portion and a compression portion having a plurality of folds, the separator includes a first barrel and a second barrel, the first barrel and the second barrel enclose to form the airbag cavity, the sealing portion is press-fitted between the first barrel and the second barrel, and the first barrel and the second barrel are hermetically connected.

2. The filtering component according to claim 1, wherein The compression portion is disposed within the first barrel and squeezes and deforms towards the second barrel when the water pressure within the filter bottle increases.

3. The filtering component according to claim 2, characterized in that, The first barrel is disposed at the bottom of the filter element, and the compression portion compresses and deforms towards the bottom of the filter bottle when the water pressure within the filter bottle increases.

4. The filter assembly according to claim 1, wherein The first barrel is disposed between the filter element and the second barrel, a fixing ring is provided on the outer periphery of the second barrel for connecting with the first barrel, a press-fitting groove is formed by the end face of the fixing ring facing the first barrel being recessed, and the sealing portion is press-fitted within the press-fitting groove.

5. The filtering component according to claim 4, wherein The end of the first barrel is press-fitted with the sealing portion within the press-fitting groove.

6. The filter assembly according to claim 4, characterized in that, A connecting portion is formed on the fixing ring for hermetically connecting with the outer periphery of the first barrel.

7. The filter assembly according to claim 6, characterized in that, The connecting portion has a first inclined surface, a second inclined surface is provided on the outer periphery of the first barrel, and the first inclined surface and the second inclined surface are welded.

8. The filter component according to claim 7, wherein, The top of the connecting portion protrudes from the end face of the second barrel.

9. The filter assembly according to claim 7, characterized in that, A connecting ring welded to the connecting portion is provided on the outer periphery of the first barrel.

10. The filter component according to claim 9, wherein, A cavity is formed by the side surface of the connecting ring facing the connecting portion being recessed for accommodating debris generated during welding.

11. The filtering component according to any one of claims 1 to 10, characterized in that, A plurality of limiting portions for restricting the position of the airbag member are provided within the first barrel.

12. A water purification device, characterized in that, including the filtering assembly according to any one of claims 1 to 11.

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