Filter bottle assembly and water purifier

Abstract

The filter bottle assembly comprises a filter bottle, a filter bottle cover and a filter element with a central pipe, one end of the filter bottle is open, the filter element is arranged in the filter bottle from the opening, the filter bottle cover seals and covers the opening, the filter bottle cover is provided with a first connecting wall and a second connecting wall, the central pipe is provided with a connecting section, and the end, where the opening is located, of the filter bottle is provided with a connecting outer wall. The first connecting wall is connected with the connecting outer wall through a first thread structure, the second connecting wall is connected with the connecting section through a second thread structure, and the thread rotating direction of the first thread structure is opposite to that of the second thread structure. According to the utility model, as the thread screwing directions of the first thread structure and the second thread structure are opposite, when the filter bottle cap is rotated to enable the first connecting wall to be screwed out relative to the connecting outer wall so as to disassemble the filter element, the second connecting wall is screwed in relative to the connecting section so as to be screwed tightly, so that the filter bottle cap and the filter element are prevented from loosening; furthermore, the filter element can be smoothly taken out while the filter bottle cap is taken down, an additional specific dismounting tool is not needed, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of water purifiers, and specifically, to a filter bottle assembly and a water purifier. Background Art

[0002] With the improvement of people's living standards, people's requirements for the quality of drinking water are also getting higher and higher. During the use of water purifiers, in order to ensure that users can obtain high-quality drinking water, the filter element must be replaced after its service life expires. For this reason, water purifiers capable of replacing filter elements are widely used due to their characteristics of cost savings and long service life.

[0003] For existing water purifiers capable of replacing filter elements, since there is usually a certain sealing performance between the filter element and the filter bottle, during the process of replacing the filter element, the problem of inconvenient disassembly often occurs. Therefore, specific tools are usually equipped to facilitate the removal of the filter element from the filter bottle, but the cost is relatively high, and this specific tool is easy to lose, reducing the user experience. Summary of the Utility Model

[0004] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present utility model, a filter bottle assembly is provided, and the technical solution is as follows.

[0005] The filter bottle assembly includes a filter bottle, a filter bottle cap, and a filter element with a central tube. One end of the filter bottle is open, the filter element is arranged in the filter bottle from the opening, the filter bottle cap covers the opening, the filter bottle cap has a first connecting wall and a second connecting wall, the central tube has a connecting section, the filter bottle has a connecting outer wall at the end where the opening is located, the first connecting wall is connected to the connecting outer wall through a first thread structure, the second connecting wall is connected to the connecting section through a second thread structure, and the thread directions of the first thread structure and the second thread structure are opposite.

[0006] For the filter bottle assembly of the present utility model, since the thread directions of the first thread structure and the second thread structure are opposite, when rotating the filter bottle cap to screw out the first connecting wall relative to the connecting outer wall to disassemble the filter element, the second connecting wall screws into and tightens relative to the connecting section, avoiding loosening between the filter bottle cap and the filter element. Furthermore, when the filter bottle cap is removed, the filter element can be smoothly taken out together without the need for an additional specific disassembly tool, saving costs and avoiding the phenomenon that the disassembly tool is lost and disassembly cannot be carried out.

[0007] Exemplarily, one end of the filter bottle away from the opening is connected to the filter element through a sealing structure, and the filter element has an installation position in a sealed state and a detachment position in a non-sealed state relative to the filter bottle. With such a setting, in the installation position, the sealing performance between the filter bottle and the filter element can be ensured through the sealing structure; in the detachment position, the filter bottle and the filter element are no longer restricted by each other due to the sealing structure, thus facilitating the easy removal of the filter element.

[0008] Exemplarily, the first thread structure has a maximum first stroke X, and the filter element has a maximum second stroke Y relative to the filter bottle from the installation position to the detachment position, where X > Y. With such a setting, it is ensured that during the process of unscrewing the filter cap connected to the filter bottle, when the filter cap has not yet detached from the filter bottle, the filter element has already reached the detachment position where the sealing is released relative to the filter bottle. When the filter cap is completely unscrewed, the filter cap can easily take out the filter element together.

[0009] Exemplarily, one end of the filter bottle away from the opening has a bottom wall of the bottle. A first water outlet is provided on the bottom wall of the bottle. The bottom wall of the bottle extends towards the interior of the filter bottle around the first water outlet to form a first installation wall to form a first installation cavity. With such a setting, the central tube can be installed in the first installation cavity to provide better structural support for the central tube through the first installation wall, making the connection between the filter element and the filter bottle more stable. And by setting the first installation wall, it is possible to prevent the filtered water from mixing with the unfiltered water or pollutants, ensuring the filtering effect.

[0010] Exemplarily, the sealing structure includes a first seal; one end of the central tube away from the connection section has an installation section. The installation section is inserted into the first installation cavity, and the first seal is arranged between the installation section and the first installation wall. With such a setting, not only the stability of the connection between the installation section and the first installation wall is enhanced, but also it is possible to further prevent the filtered water from mixing with the unfiltered water or pollutants, improving the filtering effect.

[0011] Exemplarily, the bottom wall of the bottle also has a second water outlet. The bottom wall of the bottle extends towards the interior of the filter bottle around the first installation wall to form a second installation wall to form a second installation cavity. The second water outlet is located between the first installation wall and the second installation wall. With such a setting, by setting the second installation wall, it is possible to prevent the unfiltered water from mixing with the pollutants, thereby improving the filtering efficiency.

[0012] Exemplarily, the sealing structure further includes a second seal; the filter element includes a filter element body and a filter element end cap. The filter element end cap is installed at the bottom of the filter element body. The filter element end cap has an insertion part inserted into the second installation cavity, and the second seal is arranged between the insertion part and the second installation wall. With such a setting, the second installation wall can provide better structural support for the filter element end cap, making the connection between the filter element and the filter bottle more stable. And the connection between the filter element end cap and the second installation wall is sealed by the second seal, further improving the stability of the connection between the filter element and the filter bottle, and further preventing the unfiltered water from mixing with the pollutants, thereby improving the filtering efficiency.

[0013] Exemplarily, the first thread structure includes a first external thread located on the outer side of the connecting outer wall and a first internal thread located on the inner side of the first connecting wall, and the first external thread is connected to the first internal thread. With such a setting, the filter bottle cap and the filter bottle are connected by the first thread structure, which can effectively ensure the sealing of the structure between the filter bottle cap and the filter bottle, thus avoiding water leakage. Moreover, the filter bottle and the filter bottle cap can be conveniently and quickly disassembled and assembled through the first thread structure to replace the filter element. When in use, the filter bottle cap is not easily loosened automatically, and the structure is simple and easy to process.

[0014] Exemplarily, the second thread structure includes a second external thread located on the outer side of the connecting section and a second internal thread located on the inner side of the second connecting wall, and the second external thread is connected to the second internal thread. With such a setting, the filter bottle cap and the filter element are connected by the second thread structure. By screwing out the filter bottle cap, the filter element can be taken out together, without the need to additionally produce other specific disassembly tools, saving costs. Moreover, it is simpler to machine the external thread on the connecting section than to machine the internal thread, making it easier to produce and process.

[0015] Exemplarily, the filter bottle further has a bottle side wall, the connecting outer wall is located on the bottle side wall, and a water inlet is provided on the bottle side wall. With such a setting, the water inlet provided on the bottle side wall can make the water flow into the filter bottle more evenly, and reduce the entry of pollutants into the water inlet, thereby affecting the water inlet, and thus improving the filtration efficiency.

[0016] According to another aspect of the present invention, a water purifier is provided, which includes a machine body and the filter bottle assembly as described above, and the filter bottle assembly is arranged inside the machine body. Since the filter bottle assembly as described above has the above beneficial effects, the water purifier including the filter bottle assembly as described above also has the above beneficial effects, which will not be repeated here one by one.

[0017] A series of simplified concepts are introduced in the utility model content, which will be further described in detail in the specific implementation part. The utility model content part does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0018] The advantages and features of the present invention will be described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following drawings of the present invention are used as a part of the present invention to understand the present invention. The embodiments and descriptions thereof of the present invention are shown in the drawings to explain the principles of the present invention. In the drawings,

[0020] Figure 1 is an exploded view of the filter bottle assembly of an exemplary embodiment of the present invention;

[0021] Figure 2 isFigure 1 Cross-sectional view of the filter bottle assembly shown (the filter bottle cap is installed on the filter bottle);

[0022] Figure 3 is Figure 1 Cross-sectional view of the filter bottle assembly shown (the filter bottle cap is not installed on the filter bottle);

[0023] Figure 4 is Figure 1 Stereogram of the filter element of the filter bottle assembly shown;

[0024] Figure 5 is Figure 2 Enlarged view of part A in .

[0025] Among them, the above-mentioned drawings include the following reference numerals:

[0026] 10. Filter bottle assembly; 110. Filter bottle; 111. Connecting outer wall; 112. Bottle bottom wall; 113. First water outlet; 114. First installation wall; 115. First installation cavity; 116. Second water outlet; 117. Second installation wall; 118. Second installation cavity; 119. Bottle side wall; 1191. Water inlet; 120. Filter bottle cap; 121. First connecting wall; 122. Second connecting wall; 123. Cap body; 130. Filter element; 131. Filter element body; 1311. Central tube; 1311a. Connecting section; 1311b. Installation section; 1312. Filter media; 132. Filter element end cap; 1321. Insertion part; 140. First thread structure; 141. First external thread; 142. First internal thread; 150. Second thread structure; 151. Second external thread; 152. Second internal thread; 160. Sealing structure; 161. First seal; 162. Second seal; 170. Raw water cavity. Detailed implementation manners

[0027] In the following description, a large number of details are provided to enable a thorough understanding of the present invention. However, those skilled in the art can understand that the following description only exemplarily shows the preferred embodiments of the present invention, and the present invention can be implemented without one or more such details. In addition, in order to avoid confusion with the present invention, some well-known technical features in the art are not described in detail.

[0028] In order to thoroughly understand the embodiments of the present invention, detailed structures will be presented in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the special details familiar to those skilled in the art. The preferred embodiments of the present invention are described in detail below. However, in addition to these detailed descriptions, the present invention can also have other embodiments.

[0029] An embodiment of the present utility model provides a filter bottle assembly. The filter bottle assembly provided by the present utility model can be applied to a water purifier. The following will introduce in detail a filter bottle assembly according to an embodiment of the present utility model with reference to the accompanying drawings.

[0030] Referring to Figures 1 to 5 , the filter bottle assembly 10 may include a filter bottle 110, a filter bottle cap 120, and a filter element 130 having a central tube 1311. One end of the filter bottle 110 may be open, and the filter element 130 may be disposed in the filter bottle 110 from the opening. The filter bottle cap 120 may cover the opening. The filter bottle cap 120 may have a first connecting wall 121 and a second connecting wall 122. The central tube 1311 may have a connecting section 1311a, and the filter bottle 110 may have a connecting outer wall 111 at the end where the opening is located. The first connecting wall 121 and the connecting outer wall 111 may be connected by a first thread structure 140, and the second connecting wall 122 and the connecting section 1311a may be connected by a second thread structure 150. The thread directions of the first thread structure 140 and the second thread structure 150 are opposite.

[0031] For the filter bottle assembly 10 of the present utility model, since the thread directions of the first thread structure 140 and the second thread structure 150 are opposite, when the filter bottle cap 120 is rotated to screw out the first connecting wall 121 relative to the connecting outer wall 111 to disassemble the filter element 130, the second connecting wall 122 is screwed into the connecting section 1311a and tightened, avoiding loosening between the filter bottle cap 120 and the filter element 130. Thus, when the filter bottle cap 120 is removed, the filter element 130 can be smoothly taken out together without the need for an additional specific disassembly tool, saving costs and avoiding the phenomenon that the disassembly tool is lost and disassembly cannot be performed.

[0032] Further, the filter bottle cap 120 further includes a cap body 123. The end face of the cap body 123 close to the opening may be connected to the first connecting wall 121 and the second connecting wall 122 respectively. In order to make the liquid flow more smoothly during the filtration process, reduce the possibility of blockage, and improve the filtration speed, the filter bottle 110 may be a cylindrical structure. At the same time, in order to better cover the opening on the filter bottle 110 to avoid liquid leakage, the filter bottle cap 120 may also be a corresponding cylindrical structure. Among them, the first connecting wall 121 and the second connecting wall 122 may be coaxially arranged, and the diameter of the first connecting wall 121 is greater than the diameter of the second connecting wall 122, so as to facilitate the connection between the first connecting wall 121 and the connecting outer wall 111, and the connection between the second connecting wall 122 and the connecting section 1311a. Of course, the filter bottle 110 may also be other shapes, and the filter bottle cap 120 may also be other shapes.

[0033] Referring to Figures 1 to 3The end of the filter bottle 110 away from the opening is connected to the filter element 130 through the sealing structure 160, and the filter element 130 has an installation position in a sealed state relative to the filter bottle 110 (such as Figure 3 as shown) and the release position of the sealed state (as shown Figure 4 As shown). When in the installed position, the sealing between the filter bottle 110 and the filter element 130 can be ensured by providing a sealing structure 160. When in the disengaged position, the filter bottle 110 and the filter element 130 are no longer constrained by the sealing structure 160, so that the filter element 130 can be easily removed. It can be understood that the resistance between the filter element 130 and the filter bottle 110 mainly comes from the deformation of the sealing structure 160 so that the filter element 130 and the filter bottle 110 are constrained to each other. When the filter element 130 is in the disengaged position relative to the filter bottle 110, the sealing structure 160 is no longer deformed, and there is no resistance between the filter element 130 and the filter bottle 110, so the filter element 130 can be easily removed.

[0034] Combined with reference Figure 1 , Figure 2 , Figure 3 and Figure 5 , the first thread structure 140 can have a maximum first stroke X. The filter element 130 is relative to the filter bottle 110 from the installation position (such as Figure 3 to the disengaged position (as shown) Figure 4 As shown in the figure, the filter element 130 can have a maximum second stroke Y, wherein X>Y. In this way, it is ensured that when the filter bottle cover 120 connected to the filter bottle 110 is unscrewed, the filter bottle cover 120 has not yet been separated from the filter bottle 110, and the filter element 130 is already in a disengaged position relative to the filter bottle 110 to release the sealing state. When the filter bottle cover 120 is completely unscrewed, the filter bottle cover 120 can easily remove the filter element 130. Understandably, when the user unscrews the filter bottle cover 120, since the first thread structure 140 has a maximum first stroke X, the filter bottle cover 120 will be increased along with the maximum first stroke X of the first thread structure 140. At this time, because the filter element 130 is connected to the filter bottle cover 120, the filter element 130 will also increase the maximum first stroke X. Because X>Y, when the filter element 130 increases the maximum first stroke X, the position of the filter element 130 is higher than the disengaged position relative to the filter bottle 110 in the unsealed state, and there is no resistance between the filter element 130 and the filter bottle 110, so the filter element 130 can be easily taken out, which is convenient for disassembly of the filter element 130 and improves the user experience.

[0035] Combined with reference Figures 1 to 3, one end of the filter bottle 110 away from the opening may have a bottom wall 112. A first water outlet 113 may be provided on the bottom wall 112. The bottom wall 112 may extend inwardly toward the inside of the filter bottle 110 around the first water outlet 113 to form a first mounting wall 114 to form a first mounting cavity 115. Specifically, the first water outlet 113 may be used to output filtered water, generally referred to as pure water. The first water outlet 113 may be connected to a water outlet faucet through a pipeline or directly connected to a water outlet faucet. The central tube 1311 may be installed in the first mounting cavity 115. The first mounting wall 114 may provide better structural support for the central tube 1311, making the connection between the filter element 130 and the filter bottle 110 more stable. And by providing the first mounting wall 114, it is possible to prevent the filtered water from mixing with the unfiltered water or pollutants, ensuring the filtering effect. In addition, the first mounting wall 114 positions the central tube 1311 to make the alignment between the central tube 1311 and the first water outlet 113 more accurate, ensuring that the filter element 130 is installed in the correct position in the filter bottle 110, thereby improving the filtering effect.

[0036] With reference to Figures 2 to 5 , the sealing structure 160 may include a first seal 161. One end of the central tube 1311 away from the connecting section 1311a may have a mounting section 1311b. The mounting section 1311b may be inserted into the first mounting cavity 115. The first seal 161 may be disposed between the mounting section 1311b and the first mounting wall 114. Providing the first seal 161 between the mounting section 1311b and the first mounting wall 114 not only enhances the stability of the connection between the mounting section 1311b and the first mounting wall 114, but also can further prevent the filtered water from mixing with the unfiltered water or pollutants, improving the filtering effect. Further, for the convenience of processing and installation, a sealing groove for installing the first seal 161 may be provided on the mounting section 1311b. The sealing groove with the first seal 161 installed is fitted with the first mounting wall 114 to achieve a sealing effect. Of course, a sealing groove for installing the first seal 161 may also be provided on the first mounting wall 114. Specifically, the first seal 161 may be a sealing ring. Preferably, a rubber sealing ring may be selected. The cost of the rubber sealing ring is relatively low and the installation is relatively convenient. In addition, it may also be a silica gel sealing ring, a closed-cell sponge rubber ring, a chloroprene rubber ring or a sealing ring of other materials. The first seal 161 may also be formed by applying silicone rubber on the outer wall of the mounting section 1311b for sealing.

[0037] The number of the first seals 161 may be one or more. As the number of the first seals 161 increases, the sealing performance between the filter element 130 and the filter bottle 110 is also enhanced. Preferably, the number of the first seals 161 may be two. At this time, the sealing performance of the first seals 161 is relatively strong, and the situation that it is difficult to remove the filter element 130 is avoided.

[0038] Referring to Figures 1 to 3 , a second water outlet 116 may also be provided on the bottom wall 112 of the bottle. The bottom wall 112 of the bottle may extend towards the inside of the filter bottle 110 around the first mounting wall 114 to form a second mounting wall 117 to form a second mounting cavity 118. The second water outlet 116 is located between the first mounting wall 114 and the second mounting wall 117. Specifically, the second water outlet 116 may be used to output pollutants blocked by the filtering material. Further, the second water outlet 116 may be connected to a sewer or a container for receiving pollutants through a drain pipe, so as to facilitate the user to process the pollutants. Thus, by providing the second mounting wall 117, unfiltered water can be prevented from mixing with the pollutants, thereby improving the filtering efficiency.

[0039] Referring to Figures 1 to 3 , the sealing structure 160 may further include a second seal 162. The filter element 130 may include a filter element body 131 and a filter element end cap 132. The filter element end cap 132 is installed at the bottom of the filter element body 131. The filter element end cap 132 may have an insertion portion 1321 inserted into the second mounting cavity 118. The second seal 162 may be disposed between the insertion portion 1321 and the second mounting wall 117. The second mounting wall 117 may provide better structural support for the filter element end cap 132, making the connection between the filter element 130 and the filter bottle 110 more stable, and the filter element end cap 132 and the second mounting wall 117 are sealed by the second seal 162, further improving the stability of the connection between the filter element 130 and the filter bottle 110, and further preventing unfiltered water from mixing with the pollutants, thereby improving the filtering efficiency. Further, for the convenience of processing and installation, a sealing groove for installing the second seal 162 may be provided on the filter element end cap 132, and the sealing groove with the second seal 162 installed is fitted with the second mounting wall 117 to play a sealing role. Of course, a sealing groove for installing the second seal 162 may also be provided on the second mounting wall 117. Specifically, the second seal 162 may be a sealing ring. Preferably, a rubber sealing ring may be selected. The cost of the rubber sealing ring is low and the installation is relatively convenient. In addition, it may also be a silicone rubber sealing ring, a closed-cell sponge rubber ring, a neoprene rubber ring or a sealing ring of other materials. The second seal 162 may also be formed by applying silicone rubber on the outer wall of the second mounting wall 117 for sealing. In addition, the first mounting wall 114 and the second mounting wall 117 limit the filter element end cap 132, so that the filter element end cap 132 can be quickly and accurately installed in place.

[0040] Referring to Figures 1 to 5, the first thread structure 140 may include a first external thread 141 located on the outer side surface of the connecting outer wall 111 and a first internal thread 142 located on the inner side surface of the first connecting wall 121. The first external thread 141 and the first internal thread 142 may be connected to each other. Connecting the filter bottle cap 120 and the filter bottle 110 with the first thread structure 140 can effectively ensure the structural sealing between the filter bottle cap 120 and the filter bottle 110, thus avoiding water leakage. Moreover, it is convenient to quickly disassemble and assemble the filter bottle 110 and the filter bottle cap 120 through the first thread structure 140 to replace the filter element 130. During use, the filter bottle cap 120 is not likely to loosen automatically, and the structure is simple and easy to process. Of course, the case where the first internal thread 142 is provided on the inner side surface of the connecting outer wall 111 and the first external thread 141 is provided on the outer side surface of the first connecting wall 121 is not excluded.

[0041] Referring back again to Figures 1 to 5 , the second thread structure 150 may include a second external thread 151 located on the outer side surface of the connecting section 1311a and a second internal thread 152 located on the inner side surface of the second connecting wall 122. The second external thread 151 and the second internal thread 152 may be connected to each other. Connecting the filter bottle cap 120 and the filter element 130 with the second thread structure 150 allows the filter element 130 to be taken out together by lifting the filter bottle cap 120, without the need to produce other specific tools additionally, saving costs. Moreover, machining the external thread on the connecting section 1311a is simpler than machining the internal thread, making it easier to produce and process. Of course, the case where the second internal thread 152 is provided on the inner side surface of the connecting section 1311a and the second external thread 151 is provided on the outer side surface of the second connecting wall 122 is not excluded.

[0042] Referring to Figures 1 to 3 , the filter bottle 110 may further have a bottle side wall 119. The connecting outer wall 111 may be located on the bottle side wall 119. A water inlet 1191 may be provided on the bottle side wall 119. Specifically, the water inlet 1191 may be used to convey unfiltered water, usually referred to as raw water, into the interior of the filter bottle 110. The water inlet 1191 may be connected to a water inlet faucet through a pipeline, facilitating the user to add water to the filter bottle assembly 10. Providing the water inlet 1191 on the bottle side wall 119 can make the water flow into the interior of the filter bottle 110 more evenly, and reduce the entry of pollutants into the water inlet 1191, thereby affecting the water inlet, and thus improving the filtration efficiency.

[0043] The following specifically introduces the water filtration process of the filter bottle assembly 10. Referring to Figures 1 to 4, a raw water chamber 170 for storing raw water may be provided between the filter bottle 110 and the filter element 130. The filter element body 131 may include filter media 1312 for filtering water. The filter media 1312 is wrapped outside the central tube 1311. Raw water flows into the raw water chamber 170 through the water inlet 1191. After the raw water chamber 170 is filled with raw water, the raw water may enter the filter media 1312 through one end of the filter media 1312 close to the opening of the filter bottle 110. Water inlet holes (not shown in the figure) for allowing the filtered water to enter the central tube 1311 may be formed on the central tube 1311. The raw water forms pure water after passing through layers of filtering of the filter media 1312 and reaches the central tube 1311. The pure water enters the inside of the central tube 1311 through the water inlet holes, flows out from one end of the central tube 1311 away from the filter bottle 110, and finally flows into the first installation cavity 115 and may flow out to the outside through the first water outlet 113 for the user to pick up conveniently. The pollutants blocked during the filtering process flow into the second installation cavity 118 through the gap between the filter element end cap 132 and the central tube 1311 and may be discharged through the second water outlet 116.

[0044] According to another aspect of the present invention, a water purifier is provided, which includes a machine body (not shown in the figure) and the filter bottle assembly 10 as described above, and the filter bottle assembly 10 is disposed inside the machine body. Since the filter bottle assembly 10 as described above has the above beneficial effects, the water purifier including the filter bottle assembly 10 as described above also has the above beneficial effects, which will not be repeated here one by one.

[0045] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front", "rear", "upper", "lower", "left", "right", "lateral", "vertical", "perpendicular", "horizontal" and "top", "bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation to the protection scope of the present invention; the orientation words "inside" and "outside" refer to the inside and outside relative to the contour of each component itself.

[0046] For ease of description, regional relative terms such as "above", "over", "on the upper surface", "upper" etc. can be used here to describe the regional positional relationship between one or more components or features shown in the figure and other components or features. It should be understood that regional relative terms not only include the orientation of the components described in the figure, but also different orientations during use or operation. For example, if the components in the attached figure are inverted as a whole, then the component "above other components or features" or "over other components or features" will include the situation where the component is "below other components or structures" or "under other components or structures". Thus, the exemplary term "above" can include both the orientations of "above" and "below". In addition, these components or features can also be positioned at other different angles (such as rotated 90 degrees or other angles), and this document intends to cover all such situations.

[0047] It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, components, assemblies, and / or combinations thereof.

[0048] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of the present application are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here.

[0049] The present utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of illustration and example, and are not intended to limit the present utility model within the scope of the described embodiments. In addition, those skilled in the art can understand that the present utility model is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the present utility model, and these variations and modifications all fall within the scope of protection required by the present utility model. The scope of protection of the present utility model is defined by the appended claims and their equivalent scope.

Claims

1. A filter bottle assembly, comprising a filter bottle, a filter bottle cap, and a filter element having a central tube. One end of the filter bottle is open, the filter element is disposed in the filter bottle from the opening, and the filter bottle cap covers the opening. It is characterized in that, The filter bottle cap has a first connecting wall and a second connecting wall. The central tube has a connecting section. The filter bottle has a connecting outer wall at the end where the opening is located. The first connecting wall is connected to the connecting outer wall through a first thread structure. The second connecting wall is connected to the connecting section through a second thread structure. The thread directions of the first thread structure and the second thread structure are opposite.

2. The filter bottle assembly according to claim 1, wherein One end of the filter bottle away from the opening is connected to the filter element through a sealing structure, and the filter element has an installation position in a sealed state and a detachment position in a unsealed state relative to the filter bottle.

3. The filter bottle assembly according to claim 2, wherein The first thread structure has a maximum first stroke X. The filter element has a maximum second stroke Y relative to the filter bottle from the installation position to the detachment position. Wherein, X > Y.

4. The filter bottle assembly according to claim 2, wherein One end of the filter bottle away from the opening has a bottom wall of the bottle. A first water outlet is provided on the bottom wall of the bottle. The bottom wall of the bottle extends towards the interior of the filter bottle around the first water outlet to form a first installation wall to form a first installation cavity.

5. The filter bottle assembly according to claim 4, characterized in that, The sealing structure includes a first sealing member; One end of the central tube away from the connecting section has an installation section. The installation section is inserted into the first installation cavity. The first sealing member is arranged between the installation section and the first installation wall.

6. The filter bottle assembly according to claim 5, wherein, The bottom wall of the bottle also has a second water outlet. The bottom wall of the bottle extends towards the interior of the filter bottle around the first installation wall to form a second installation wall to form a second installation cavity. The second water outlet is located between the first installation wall and the second installation wall.

7. The filter bottle assembly according to claim 6, characterized in that, The sealing structure further includes a second sealing member; The filter element includes a filter element body and a filter element end cap. The filter element end cap is installed at the bottom of the filter element body. The filter element end cap has an insertion part inserted into the second installation cavity. The second sealing member is arranged between the insertion part and the second installation wall.

8. The filter bottle assembly according to claim 1, wherein, The first thread structure includes a first external thread on the outer side surface of the connecting outer wall and a first internal thread on the inner side surface of the first connecting wall. The first external thread is connected to the first internal thread.

9. The filter bottle assembly according to claim 1, wherein The second thread structure includes a second external thread on the outer side surface of the connecting section and a second internal thread on the inner side surface of the second connecting wall. The second external thread is connected to the second internal thread.

10. The filter bottle assembly according to claim 1, characterized in that The filter bottle also has a side wall of the bottle. The connecting outer wall is located on the side wall of the bottle. A water inlet is provided on the side wall of the bottle.

11. A water purifier, characterized in that, It includes a machine body and a filter bottle assembly as described in any one of claims 1 - 10. The filter bottle assembly is arranged inside the machine body.

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