Filter bottle with filter element convenient to replace

Abstract

The filter bottle comprises a bottle body, a bottle cap and a valve body, the filter element is arranged in the bottle body, an inner cavity of the bottle body is divided into a raw water cavity and a purified water cavity through the filter element, the bottle cap is arranged at the top of the bottle body, the inner cavity is arranged in the bottle cap, and a water inlet channel and a water outlet channel are arranged on the bottle cap. The water inlet channel and the water outlet channel are both communicated with the inner cavity, the valve body is rotatably arranged in the inner cavity, a bypass flow channel is arranged in the valve body, so that the filter bottle is switched to be in a filtering state or a bypass state by rotating the valve body, and in the bypass state, the water inlet channel and the water outlet channel are communicated through the bypass flow channel; the filter bottle does not filter under the conditions that the water consumption is large and the requirement for the water quality is low, so that the working load of the filter element is reduced, the service life of the filter element is prolonged, the cost of maintaining the filter element by a user is reduced, and the filter bottle is simple in structure and low in manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the technical field of domestic water filtration equipment, and in particular to a filter bottle that facilitates filter element replacement. Background Technology

[0002] With rapid industrialization and urbanization, global water pollution has become increasingly serious. Industrial wastewater discharge, agricultural non-point source pollution, and improper treatment of domestic sewage have led to the contamination of large water bodies, making directly drinkable water resources increasingly scarce. The growing demand for safe and healthy drinking water has spurred the rapid development of water filter bottles, which are gradually becoming a common household item.

[0003] Currently, when replacing the filter cartridge, it is necessary to block the flow of water between the filter bottle and the lower housing. However, in existing technology, the water inlet valve is set on the water inlet chamber and the water outlet valve is set on the water outlet channel to achieve the water-stopping effect of blocking the raw water from entering the filter bottle and blocking the purified water from leaving the filter bottle. However, this method cannot stably control the residual water inside the filter bottle and occupies a large installation space. Users need to close the two valves in sequence to achieve the water-stopping effect, which is complicated for users, costly, and results in a poor user experience, failing to meet the user's needs. Utility Model Content

[0004] The purpose of this invention is to provide a filter bottle that facilitates filter replacement, thereby addressing at least one of the technical problems existing in the prior art.

[0005] To achieve the above objectives, the present invention provides a filter bottle that facilitates filter element replacement, comprising:

[0006] The bottle body has an open top, and a filter element is vertically arranged inside the bottle body to divide the inner cavity of the bottle body into a raw water cavity and a purified water cavity. The raw water cavity is located inside the hollow part of the filter element.

[0007] A bottle cap is disposed on the top of the bottle body. The bottle cap has an inner cavity and is provided with a water inlet channel, a water outlet channel, and a wastewater channel. The water inlet channel, the water outlet channel, and the wastewater channel are all connected to the inner cavity.

[0008] A valve body is rotatably disposed in the inner cavity to switch the filter bottle to a filtration state, a backwashing state, and / or a first state by rotating the valve body. In the filtration state, the inlet channel is connected to the raw water chamber and the outlet channel is connected to the purified water chamber, so that the raw water in the raw water chamber flows into the purified water chamber after being filtered from the inside to the outside by the filter element. In the backwashing state, the valve body connects the raw water chamber and the wastewater channel, so that the purified water in the purified water chamber backwashes the raw water chamber and flows out from the wastewater channel. In the first state, the valve body disconnects the inlet channel from the raw water chamber and / or the outlet channel from the purified water chamber.

[0009] Furthermore, the valve body is provided with a bypass channel, and the first state includes a bypass state, in which the water inlet channel and the water outlet channel are connected through the bypass channel.

[0010] Furthermore, a first fluid control surface is formed on the inner circumferential surface of the inner cavity, and a second fluid control surface is formed on the outer circumferential surface of the valve body, so that when the valve body is installed in the inner cavity, the second fluid control surface and the first fluid control surface fit together. Rotating the valve body causes the second fluid control surface to rotate to a first position, a second position, or a third position that mates with the first fluid control surface. In the first position, the filter bottle is in a filtering state; in the second position, the filter bottle is in a backwashing state; and in the third position, the filter bottle is in a bypass state. The second position and the third position may be the same as or different from each other.

[0011] Furthermore, the first fluid control surface is provided with a first opening communicating with the water inlet channel, a second opening communicating with the water outlet channel, and a third opening communicating with the wastewater channel;

[0012] The valve body is provided with a first chamber and a second chamber. The bottom of the first chamber is connected to the raw water chamber, and the bottom of the second chamber is connected to the clean water chamber. A first opening connecting the first chamber and a second opening connecting the second chamber are provided on the second fluid control surface. The bypass openings at both ends of the bypass channel are provided on the second fluid control surface. In a first position, the first opening and the first port are aligned, and the second opening and the second port are aligned. In a second position, the third opening and the first port are aligned. In a third position, the two bypass openings are aligned with the first opening and the second opening, respectively.

[0013] Furthermore, the valve body is hollow and has an opening at the bottom. The top wall of the valve body protrudes downward to form a protruding annular wall, which divides the valve cavity into a first chamber and a second chamber. The bottom of the first chamber is connected to the raw water chamber, and the bottom of the second chamber is connected to the purified water chamber.

[0014] Furthermore, the protruding annular wall extends radially outward to form a first channel to connect the first chamber with the first opening through the first channel.

[0015] Furthermore, the top of the valve body abuts against the top wall inside the bottle cap, and the bottom of the valve body abuts against the top wall of the filter element, so that the valve body cannot move longitudinally within the inner cavity.

[0016] Furthermore, the valve body includes a valve core and a hand-tightening part. The top of the bottle cap is provided with an avoidance hole. The top of the valve core extends out of the bottle cap. The hand-tightening part is detachably connected to the top of the valve core. By turning the hand-tightening part, the valve core is rotated, thereby switching the filter bottle to the filtration state, backwashing state, or bypass state.

[0017] Furthermore, the inlet channel and the outlet channel are arranged on the same axis, and the wastewater channel is arranged at an angle to the outlet channel.

[0018] Furthermore, the inner sidewall of the bottom of the bottle is provided with multiple supporting ribs spaced circumferentially, and each of the multiple supporting ribs is provided with a limiting step to form an installation platform. The lower end of the filter element abuts against the installation platform, and an accommodating space is formed between the lower end of the filter element and the bottom wall of the bottle. An air bladder is provided in the accommodating space; or

[0019] An installation post is provided between the bottom of the filter element and the bottom wall of the bottle. An air bladder is provided on the installation post, and an installation hole is formed in the middle of the air bladder so that the air bladder can be sleeved onto the installation post through the installation hole for installation.

[0020] As can be seen from the above technical solution, the filter bottle of this utility model, by rotating the valve body, puts the filter bottle into a filtration state or a first state. In the filtration state, the valve body connects the inlet channel to the raw water chamber and the outlet channel to the clean water chamber, so that the raw water flowing in from the inlet channel is filtered from the raw water chamber to the clean water chamber, i.e., from the inside to the outside. The filtered clean water will flow out from the outlet channel to supply the user's daily life. In the first state, the valve body can cut off the inlet channel from the raw water chamber and / or the outlet channel from the clean water chamber, so that the water between the bottle body and the bottle cap is stopped, thereby facilitating the unscrewing of the bottle body to replace the filter element. With this setting, the valve body can further control the water flow in the filter bottle, integrating the stop function inside the filter bottle, eliminating the need to install additional valves on the inlet and outlet channels, making the overall structure more compact, reducing external pipe accessories, saving installation space, reducing pipe connection points, and reducing the risk of water leakage that may be caused by too many connection points. The filter bottle with this setting has a simple structure, low cost, low failure rate, is easy to maintain, easy to produce, and has good practicality.

[0021] To make the technical concept, other objectives, advantages, features and functions of this utility model clearer and easier to understand, preferred embodiments will be specifically described in the following detailed description, and will be illustrated in conjunction with the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the internal structure of a filter bottle that facilitates filter element replacement, provided in an embodiment of this application.

[0024] Figure 2 This is an exploded view of the structure of a filter bottle that facilitates filter element replacement, as provided in an embodiment of this application.

[0025] Figure 3 This is an exploded view of the filter bottle provided by the embodiments of this application, which facilitates filter replacement;

[0026] Figure 4 This is a perspective view of a filter bottle provided in an embodiment of this application, which facilitates filter element replacement;

[0027] Figure 5 This is a schematic diagram of the valve core structure provided in the embodiments of this application;

[0028] Figure 6 This is provided by the embodiments of this application. Figure 5Sectional view at point AA;

[0029] Figure 7 This is provided by the embodiments of this application. Figure 5 Sectional view at point BB;

[0030] Figure 8 This is a schematic diagram of the internal structure of the valve body provided in the embodiments of this application;

[0031] Figure 9 This is an exploded view of the structure under the filtered state provided in the embodiments of this application;

[0032] Figure 10 This is an exploded view of the structure under backwashing conditions provided in the embodiments of this application;

[0033] Figure 11 This is an exploded view of the structure in the bypass state provided in the embodiments of this application;

[0034] Figure 12 This is a cross-sectional view of the valve body in the filtering state provided in the embodiment of this application;

[0035] Figure 13 This is a cross-sectional view of the valve body under backwashing conditions provided in the embodiments of this application;

[0036] Figure 14 This is a cross-sectional view of the valve body in the bypass state provided in the embodiment of this application;

[0037] The above figures include the following reference numerals:

[0038] 100. Bottle body; 120. Filter element; 130. Raw water chamber; 140. Purified water chamber; 150. Support rib; 160. Limiting step; 170. Containing space; 180. Air bladder;

[0039] 200. Bottle cap; 210. Inner cavity; 220. Water inlet channel; 230. Water outlet channel; 240. Wastewater channel; 250. Clearance hole;

[0040] 300. Valve body; 310. Valve core; 311. Bypass flow channel; 312. First chamber; 313. Second chamber; 314. Protruding annular wall; 315. First channel; 320. Hand-tightening part;

[0041] 400, First fluid control surface; 410, First opening; 420, Second opening; 430, Third opening;

[0042] 500, Second fluid control surface; 510, First port; 520, Second port; 530, Bypass port. Detailed Implementation

[0043] This application provides a filter bottle with an easy-to-replace filter element, thus solving at least one of the technical problems existing in the prior art. By rotating the valve body 300 to different positions, the filter bottle can be switched between a filtering state and a stop state. Unlike existing filter bottles, the internal structure of the filter bottle of this utility model is relatively simple. The state of the filter bottle can be switched with one button by rotating the valve body 300. In the bypass state, the inlet channel 220 and the outlet channel 230 are directly connected through the bypass flow channel 311. The raw water flowing in from the inlet channel 220 will not be filtered by the filter element 120 and will flow through the outlet channel 230 to supply the user. In some scenarios with high water consumption and low water quality requirements, the filter bottle does not perform filtration, reducing the workload of the filter element 120, increasing the service life of the filter element 120, and reducing the user's maintenance cost of the filter element 120. In addition, in the filtering state, the filter of this utility model is from the inside of the filter element 120 to the outside of the valve core 310. The filter bottle with this setting has a better filtration effect, a better user experience, and is easier to operate.

[0044] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] Please refer to the following: Figures 1 to 14This embodiment provides a filter bottle with an easy-to-replace filter element, including a bottle body 100, a bottle cap 200, and a valve body 300. The top of the bottle is open. A filter element 120 is vertically arranged inside the bottle body 100, dividing the inner cavity 210 of the bottle body 100 into a raw water cavity 130 and a purified water cavity 140. The raw water cavity 130 is located inside the hollow interior of the filter element 120. The bottle cap 200 is located at the top of the bottle body 100 and contains an inner cavity 210. The bottle cap 200 has an inlet channel 220 and an outlet channel 230, both of which communicate with the inner cavity 210. The valve body 300 is rotatably disposed within the inner cavity 210. In the valve body 300, a bypass channel 311 is provided to switch the filter bottle to either the filtration state or the first state by rotating the valve body 300. In the filtration state, the inlet channel 220 is connected to the raw water chamber 130 and the outlet channel 230 is connected to the purified water chamber 140, so that the raw water in the raw water chamber 130 flows into the purified water chamber 140 after being filtered from the inside to the outside by the filter element 120. The first state includes a water-stopping state and a bypass state. In the bypass state, the inlet channel 220 and the outlet channel 230 are connected through the bypass channel 311, so that the inlet channel 220 is disconnected from the raw water chamber 130 and / or the outlet channel 230 is disconnected from the purified water chamber 140 by the valve body 300.

[0046] As can be seen, in this embodiment, the filter bottle can be switched between a filtration state and a bypass state by rotating the valve body 300. In the filtration state, the valve body 300 connects the inlet channel 220 to the raw water chamber 130 and the outlet channel 230 to the purified water chamber 140, so that the raw water flowing in through the inlet channel 220 is filtered from the raw water chamber 130 to the purified water chamber 140, i.e., from the inside to the outside. The filtered purified water will flow out from the outlet channel 230 to supply the user's daily life. In the bypass state, the inlet channel 220 and the outlet channel 230 are directly connected through the bypass channel 311, and the raw water flowing in through the inlet channel 220 is not filtered. The filter cartridge 120 filters water that flows out through the outlet channel 230 to supply the user. In scenarios with high water consumption and low water quality requirements, the filter bottle does not perform filtration. This setting reduces the workload of the filter cartridge 120, extends its service life, and reduces the user's maintenance costs. The filter bottle has a simple structure and low manufacturing cost. Filtration is achieved from the inside of the filter cartridge 120 to the outside, resulting in a better filtration effect. By rotating the valve body 300 to different angles, the filter bottle can be switched to filtration mode or bypass mode with one button. The operation is simple, achieving a one-button switching effect and providing a good user experience.

[0047] The filter bottle's filtration structure, which extends from the inside out, can achieve high precision without affecting water pressure. Since the filtration area of ​​the outer layer of the filter element 120 is 15-20 times that of the inner layer, the resistance of the outer layer is lower. The filter element 120 is designed with a structure that gradually increases filtration precision from the inside out, so that the resistance does not increase when the raw water is filtered from the inside out. Compared with the existing filter bottle's filtration method from the outside in, the filter bottle in this embodiment has a higher filtration rate for raw water under the same conditions.

[0048] In this embodiment, as Figures 2 to 3 As shown, the top of the outer circumferential surface of the bottle body 100 is provided with an external thread, and the bottom of the inner circumferential surface of the bottle cap 200 is provided with an internal thread. The bottle cap 200 and the bottle body 100 are connected by threads. The filter element 120 can be a PP cotton filter element. PP cotton is a roll-shaped filter element made of non-toxic and odorless polypropylene through heating, melting, spinning, drawing, and forming. The PP cotton filter element has a deep filtration structure with uniform pore size and a loose outer and dense inner structure, and has excellent characteristics such as high filtration efficiency and resistance to acids and alkalis.

[0049] In this embodiment, the bottle cap 200 is also provided with a wastewater channel 240, which is connected to the inner cavity 210. By rotating the valve body 300, the filter bottle can be put into a backwashing state. In the backwashing state, the original water chamber 130 and the wastewater channel 240 are connected through the valve body 300, so that the purified water in the purified water chamber 140 backwashes the original water chamber 130 and flows out from the wastewater channel 240. By rotating the valve body 300, the filter bottle is put into a backwashing state. In the backwashing state, the purified water in the purified water chamber 140 will backwash the original water chamber 130 and wash the impurities attached to the filter element 120 or the impurities retained in the original water chamber 130 into the wastewater channel 240 and discharge it out of the filter bottle through the wastewater channel 240. The filter bottle with the backwashing state set up in this way allows the user to wash the filter element 120 without disassembling it, which is convenient for the user to clean the filter element 120.

[0050] Preferably, the bottle body 100 is made of transparent material, which allows the user to easily observe the status of the filter element 120. Since the filtration direction in this embodiment is from the inside of the filter element 120 to the outside of the filter element 120, when the filtration effect of the filter element 120 tends to be saturated, the user can switch the filter bottle to the backwash state or replace the filter element 120 when the outside of the filter element 120 changes color.

[0051] It is worth noting that since the filtration area of ​​the outer layer of filter element 120 is 15-20 times that of the inner layer, the water flow rate on the surface of the filter element 120 is faster with the same amount of rinsing water. Therefore, the rinsing effect from the outside to the inside of filter element 120 is much better than rinsing from the inside to the outside. The rinsing effect depends on the instantaneous pressure difference generated on the surface of filter element 120. When filter element 120 switches from the filtration state to the backwashing state, a pressure difference will be formed between the inside of the filter bottle and the wastewater channel 240. The faster the filter bottle state switching speed, the greater the pressure difference. The impurities adhering to the filter element 120 will be rinsed off instantly. Then these impurities will be discharged from the wastewater channel 240. There is no need to consume a lot of water for rinsing, and the rinsing effect is good. After rinsing, rotate valve body 300 to return to the initial filtration state. If the rinsing is not clean enough, the state of the filter bottle can be switched repeatedly.

[0052] In this embodiment, as Figures 1 to 14 As shown, a first fluid control surface 400 is formed on the inner circumferential surface of the inner cavity 210, and a second fluid control surface 500 is formed on the outer circumferential surface of the valve body 300. When the valve body 300 is installed in the inner cavity 210, the second fluid control surface 500 and the first fluid control surface 400 are in contact. Rotating the valve body 300 causes the second fluid control surface 500 to rotate to a first position, a second position, or a third position that mates with the first fluid control surface 400. In the first position, the filter bottle is in the filtering state; in the second position, the filter bottle is in the backwashing state; and in the third position, the filter bottle is in the bypass state. By rotating the second fluid control surface 500 to the first position, the second position, or the third position that mates with the first fluid control surface 400, the filter bottle is in the filtering state in the first position, in the backwashing state in the second position, and in the bypass state in the third position. The filter bottle structure configured in this way is simple, stable, and reliable.

[0053] It is worth noting that the third position may be the same as or different from the second position, such as Figure 10 and Figure 13 As shown, the second and third positions are the same, with the filter bottle simultaneously in both bypass and backwashing states. The bypass and backwashing functions do not affect each other. In one possible implementation, by changing the setting angle of the bypass channel 311, the bypass channel 311 does not connect the inlet and outlet channels when the filter bottle is in the backwashing state. Thus, in the second position, the filter bottle can only achieve the backwashing effect, and in the third position, the filter bottle can only achieve the bypass effect.

[0054] In this embodiment, as Figures 1 to 14As shown, the first fluid control surface 400 has a first opening 410 communicating with the inlet channel 220, a second opening 420 communicating with the outlet channel 230, and a third opening 430 communicating with the wastewater channel 240. The valve body 300 has a first chamber 312 and a second chamber 313. The bottom of the first chamber 312 communicates with the raw water chamber 130, and the bottom of the second chamber 313 communicates with the clean water chamber 140. The second fluid control surface 500 has a first port 510 communicating with the first chamber 312 and a second port 520 communicating with the second chamber 313, with bypass... The bypass ports 530 at both ends of the flow channel 311 are both located on the second fluid control surface 500. In the first position, the first opening 410 and the first port 510 are aligned, and the second opening 420 and the second port 520 are aligned. In the second position, the third opening 430 and the first port 510 are aligned. In the third position, the two bypass ports 530 are aligned with the first opening 410 and the second opening 420, respectively. This arrangement allows the filter bottle to be switched to the filtration state, backwashing state, or bypass state with one key by rotating the valve body 300. This switching structure is simple and highly practical.

[0055] In this embodiment, as Figures 2 to 8 As shown, the valve body 300 is hollow and has an open bottom. The top wall inside the valve body 300 extends downward to form a protruding annular wall 314, which divides the valve cavity into a first chamber 312 and a second chamber 313. The bottom of the first chamber 312 is connected to the raw water chamber 130, and the bottom of the second chamber 313 is connected to the purified water chamber 140. The structural design of the protruding annular wall 314 makes full use of the internal space of the valve body 300, and achieves the division of the first chamber 312 and the second chamber 313 within a limited space. The functions of the first chamber 312 and the second chamber 313 are clearly defined. The bottom of the first chamber 312 is connected to the raw water chamber 130, and the bottom of the second chamber 313 is connected to the purified water chamber 140, making the structure more compact, which helps to reduce the overall volume of the filter bottle, save installation space, and facilitate production and assembly.

[0056] The number of the first opening 410, the second opening 420, the third opening 430, the first through 510, the second through 520, and the third through 530 can be set to one or more. The number and shape of the first opening 410, the second opening 420, the third opening 430, the first through 540, the second through 520, and the third through 530 should not be considered as limitations of this utility model. Similarly, the first chamber 312 or the second chamber 313 can also be set to one or more, and the first channel 315 can also be set to one or more. These simple substitutions should all be within the protection scope of this utility model.

[0057] Preferably, the top of the filter element 120 extends upward to form an annular connecting structure, and a sealing ring is provided on the outer peripheral surface of the annular connecting structure so that the inner peripheral surface of the protruding annular wall 314 fits against the outer peripheral surface of the annular connecting structure and the bottom surface of the protruding annular wall 314 abuts against the top surface of the filter element 120 so that the raw water will not leak between the protruding annular wall 314 and the filter element 120.

[0058] In this embodiment, as Figures 1 to 14 As shown, the protruding annular wall 314 extends radially outward to form a first channel 315 to connect the first chamber 312 and the first port 510. The first chamber 312 and the second chamber 313 are not connected in the valve cavity. By extending the first channel 315 outward on the protruding annular wall 314 to connect the first chamber 312 and the first port 510 and isolate the second chamber 313, the raw water can be stably introduced into the raw water chamber 130 for filtration in the filtration state, which improves the accuracy of water flow control and ensures the normal operation of the filter bottle.

[0059] In this embodiment, the top of the valve body 300 abuts against the top wall inside the bottle cap 200, and the bottom of the valve body 300 abuts against the top wall of the filter element 120, so that the valve body 300 cannot move longitudinally within the inner cavity 210. This arrangement fixes the position of the valve body 300 within the inner cavity 210, reducing damage caused by friction and collision between the valve body 300 and the inner cavity 210, preventing longitudinal displacement of the valve body 300 due to water flow impact or external vibration, making the fit between the second fluid control surface 500 and the first fluid control surface 400 more stable, and allowing the second fluid control surface 500 to accurately rotate to the first, second, or third position. Furthermore, when installing the valve body 300, workers only need to ensure the top of the valve body 300 abuts against the top wall inside the bottle cap 200 to determine its longitudinal position, thus improving production efficiency.

[0060] Furthermore, such as Figures 1 to 4 As shown, the valve body 300 includes a valve core 310 and a hand-tightening part 320. A clearance hole 250 is provided on the top of the bottle cap 200. The top of the valve core 310 protrudes outside the bottle cap 200. The hand-tightening part 320 is detachably connected to the top of the valve core 310. By turning the hand-tightening part 320, the valve core 310 rotates, thereby switching the filter bottle to filtration mode, backwashing mode, or bypass mode. Users can easily rotate the valve core 310 directly through the hand-tightening part 320 to switch the filter bottle between different working states. The position and movement of the hand-tightening part 320 are clearly visible, allowing users to clearly see its position and intuitively understand the current working state of the filter bottle. Figures 5 to 8As shown, when the hand-tightening part 320 is in a specific position, the user can observe whether the filter bottle is filtering, backwashing, or in bypass mode, thus avoiding equipment damage or poor performance due to misoperation.

[0061] Preferably, the top of the valve core 310 is provided with a square protrusion, and the hand-tightening part 320 is provided with a square groove. The hand-tightening part 320 is installed on the valve core 310 by inserting the square groove into the square protrusion.

[0062] In one possible implementation, the hand-tightening part 320 can be an electronically driven control component.

[0063] Furthermore, such as Figures 1 to 11 As shown, the inlet channel 220 and the outlet channel 230 are set on the same axis, and the wastewater channel 240 is set at an angle to the outlet channel 230. This setting makes it easier for installers to align and install the inlet and outlet pipes, reduces bending and twisting during the pipe connection process, lowers the installation difficulty, and improves the installation efficiency.

[0064] In this embodiment, as Figure 1 As shown, the inner sidewall of the bottom of the bottle body 100 is provided with multiple support ribs 150 at intervals along the circumference. Each of the multiple support ribs 150 is provided with a limiting step 160 to form an installation platform. The lower end of the filter element 120 abuts against the installation platform, and an accommodating space 170 is formed between the lower end of the filter element 120 and the bottom wall of the bottle body 100. An air bladder 180 is provided in the accommodating space 170.

[0065] In one possible implementation, an installation post is provided between the bottom of the filter element 120 and the bottom wall of the bottle body 100. An air bladder 180 is provided on the installation post, and an installation hole is formed in the middle of the air bladder 180 so that the air bladder 180 is fitted onto the installation post through the installation hole for installation.

[0066] Preferably, the volume of the air bladder 180 under atmospheric pressure is approximately 0.75-1.25 times the volume of the original water chamber 130. This arrangement ensures that the expansion volume of the air bladder 180 is similar to the volume of the original water chamber 130, so that during backwashing, the air bladder 180 expands under pressure and can discharge wastewater of equal expansion volume from the wastewater channel 240 outside the filter bottle. In other embodiments, an external pressure tank can also be installed on one side of the outlet channel 230 to assist backwashing.

[0067] When water usage stops, the air bladder 180 is compressed under water pressure, which effectively eliminates the water hammer impact on the filter bottle.

[0068] The volume of the raw water chamber 130 is about 1 / 10 of the overall volume of the filter element 120. The water capacity of the raw water chamber 130 is about 150ml. Its volume is small and similar to the shrinkage volume of the air bladder 180. Therefore, the pressure generated by the depressurization and expansion of the air bladder 180 can just be used to clean out the impurities and sewage in the raw water chamber 130. This way, the impurities and sewage can be cleaned out without wasting too much rinsing water.

[0069] The assembly steps of this utility model are as follows: First, position and install the air bag 180 at the bottom of the bottle body 100, then place the filter element 120 vertically into the bottle body 100, align and set the valve body 300 at the top of the filter element 120, then screw the bottle cap 200 onto the bottle body 100, and the top of the valve body 300 will pass through the clearance hole 250 in the bottle cap 200. Finally, install the hand-tightening part 320 onto the top of the valve body 300.

[0070] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: By rotating the valve body 300 to put the filter bottle into the filtration state or the first state, in the filtration state, the valve body 300 connects the inlet channel 220 with the raw water chamber 130 and the outlet channel 230 with the purified water chamber 140, so that the raw water flowing into the inlet channel 220 is filtered from the raw water chamber 130 to the purified water chamber 140, that is, from the inside to the outside. The filtered purified water will flow out from the outlet channel 230 to supply the user's daily life. In the first state, the valve body 300 can be used to disconnect the inlet channel 220 from the raw water chamber 130 and / or the outlet channel 230. The filter body 100 is shut off from the water purification chamber 140 to stop water flow between the bottle body 100 and the bottle cap 200, making it easy to unscrew the bottle body 100 to replace the filter element 120. With this design, the valve body 300 can further control the water flow in the filter bottle, integrating the stop function inside the filter bottle. There is no need to install additional valves on the inlet channel 220 and the outlet channel 230, making the overall structure more compact, reducing external pipe accessories, saving installation space, reducing pipe connection points, and reducing the risk of leakage that may be caused by too many connection points. The filter bottle structure with this design is simple, low-cost, has a low failure rate, is easy to maintain, easy to manufacture, and has good practicality.

[0071] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0072] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0073] In the description of this application, the terms "center", "upper", "lower", "front", "rear", "left", "right", "lateral", "longitudinal", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0074] It should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "set, connect, link, install" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, abutting connections, or integral connections. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0075] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0076] Furthermore, it should be noted that in the description of this utility model, the use of terms such as "first" and "second" to define the components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0077] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A filter bottle with an easy-to-replace filter element, characterized in that, include: The bottle body has an open top, and a filter element is vertically arranged inside the bottle body to divide the inner cavity of the bottle body into a raw water cavity and a purified water cavity. The raw water cavity is located inside the hollow part of the filter element. A bottle cap is disposed on the top of the bottle body. The bottle cap has an inner cavity and is provided with a water inlet channel, a water outlet channel, and a wastewater channel. The water inlet channel, the water outlet channel, and the wastewater channel are all connected to the inner cavity. A valve body is rotatably disposed in the inner cavity to switch the filter bottle to a filtration state, a backwashing state, and / or a first state by rotating the valve body. In the filtration state, the inlet channel is connected to the raw water chamber and the outlet channel is connected to the purified water chamber, so that the raw water in the raw water chamber flows into the purified water chamber after being filtered from the inside to the outside by the filter element. In the backwashing state, the valve body connects the raw water chamber and the wastewater channel, so that the purified water in the purified water chamber backwashes the raw water chamber and flows out from the wastewater channel. In the first state, the valve body disconnects the inlet channel from the raw water chamber and / or the outlet channel from the purified water chamber.

2. The filter bottle with easy filter element replacement according to claim 1, characterized in that, The valve body is provided with a bypass channel. The first state includes a bypass state, in which the water inlet channel and the water outlet channel are connected through the bypass channel.

3. The filter bottle with easy filter element replacement according to claim 2, characterized in that, The inner circumferential surface of the inner cavity is formed with a first fluid control surface, and the outer circumferential surface of the valve body is formed with a second fluid control surface, so that when the valve body is installed in the inner cavity, the second fluid control surface and the first fluid control surface fit together. Rotating the valve body causes the second fluid control surface to rotate to a first position, a second position, or a third position that mates with the first fluid control surface. In the first position, the filter bottle is in a filtering state; in the second position, the filter bottle is in a backwashing state; and in the third position, the filter bottle is in a bypass state. The second position and the third position may be the same as or different from each other.

4. The filter bottle with easy filter element replacement according to claim 3, characterized in that, The first fluid control surface has a first opening communicating with the water inlet channel, a second opening communicating with the water outlet channel, and a third opening communicating with the wastewater channel; The valve body is provided with a first chamber and a second chamber. The bottom of the first chamber is connected to the raw water chamber, and the bottom of the second chamber is connected to the clean water chamber. A first opening connecting the first chamber and a second opening connecting the second chamber are provided on the second fluid control surface. The bypass openings at both ends of the bypass channel are provided on the second fluid control surface. In a first position, the first opening and the first port are aligned, and the second opening and the second port are aligned. In a second position, the third opening and the first port are aligned. In a third position, the two bypass openings are aligned with the first opening and the second opening, respectively.

5. The filter bottle with easy filter element replacement according to claim 4, characterized in that, The valve body is hollow and has an opening at the bottom. The top wall of the valve body protrudes downward to form a protruding annular wall, which divides the valve cavity into a first chamber and a second chamber. The bottom of the first chamber is connected to the raw water chamber, and the bottom of the second chamber is connected to the purified water chamber.

6. The filter bottle with easy filter element replacement according to claim 5, characterized in that, The protruding annular wall extends radially outward to form a first channel to connect the first chamber with the first opening.

7. The filter bottle with easy filter element replacement according to claim 4, characterized in that, The top of the valve body abuts against the top wall inside the bottle cap, and the bottom of the valve body abuts against the top wall of the filter element, so that the valve body cannot move longitudinally within the inner cavity.

8. The filter bottle with easy filter element replacement according to any one of claims 2 to 7, characterized in that, The valve body includes a valve core and a hand-tightening part. The top of the bottle cap is provided with an avoidance hole. The top of the valve core extends out of the bottle cap. The hand-tightening part is detachably connected to the top of the valve core. By turning the hand-tightening part, the valve core is rotated, thereby switching the filter bottle to the filtration state, backwashing state, or bypass state.

9. The filter bottle with easy filter element replacement according to any one of claims 2 to 7, characterized in that, The inlet channel and the outlet channel are arranged on the same axis, and the wastewater channel is arranged at an angle to the outlet channel.

10. The filter bottle with easy filter element replacement according to any one of claims 2 to 7, characterized in that, The inner wall of the bottom of the bottle is provided with multiple supporting ribs spaced circumferentially. Each supporting rib has a limiting step to form an installation platform. The lower end of the filter element abuts against the installation platform, and an accommodating space is formed between the lower end of the filter element and the bottom wall of the bottle. An air bladder is provided within this accommodating space; or An installation post is provided between the bottom of the filter element and the bottom wall of the bottle. An air bladder is provided on the installation post, and an installation hole is formed in the middle of the air bladder so that the air bladder can be sleeved onto the installation post through the installation hole for installation.

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