A filter bottle structure

Abstract

The application relates to the technical field of filter bottles, and discloses a filter bottle structure which comprises a sealing cover, a filter bottle main body, a clamping structure and a sealing valve structure. The sealing cover is provided with a water inlet channel and a water outlet channel; the filter bottle main body is detachably matched with the sealing cover, the filter bottle main body is internally provided with a filtering cavity used for accommodating a filter core, and the filtering cavity is connected with the water inlet channel and the water outlet channel; the clamping structure is movably installed on the sealing cover and comprises an operating assembly and a clamping assembly; and the sealing valve structure is movably installed on the water inlet channel and corresponds to the operating assembly. Under the action of external force, the sealing valve structure has a pressure relief state of being driven by a limiting elastic sheet to move towards the direction of being close to the filtering cavity so as to release the pressure in the filtering cavity. The application improves the convenience of filter core replacement, ensures that the pressure in the filtering cavity has been released before the filter bottle main body is released, avoids water splashing or spattering caused by pressure release, and improves the operation safety.

Description

Technical Field

[0001] This invention relates to the field of filter bottle technology, and more specifically to a filter bottle structure. Background Technology

[0002] In the field of water treatment equipment, especially in large-volume filter bottles used in high-flow-rate water purification systems, the connection structure between the bottle body and the cap directly affects the sealing safety and ease of maintenance of the equipment. Currently, the most common structural form on the market is the threaded connection type, which uses the internal and external threads on the bottle body and the cap to tighten together to achieve fixation and sealing. This structure has the advantages of fewer parts, mature processing technology, and lower manufacturing cost, and is therefore widely used.

[0003] However, in practical use, this threaded connection method has revealed many shortcomings. First, when installing or replacing filter media, operators must use a special wrench that matches the thread specification to apply sufficient torque to tighten or loosen the cap. The operation is laborious and time-consuming, especially in space-constrained installation environments where the wrench's range of motion is limited, further exacerbating the inconvenience. More importantly, the complex stress state of the thread makes disassembly difficult, and factors such as material creep and thread wear can easily pose hidden dangers to the safe operation of the equipment. Summary of the Invention

[0004] In view of this, the present invention provides a filter bottle structure to solve the problems of laborious and time-consuming operation and difficulty in disassembly in related technologies.

[0005] In a first aspect, the present invention provides a filter bottle structure, comprising: A sealing cap, which has an inlet channel and an outlet channel; The filter bottle body is detachably fitted with the sealing cap. The filter bottle body has a filter chamber for accommodating the filter element. The filter chamber is connected to both the water inlet channel and the water outlet channel. A clamping structure is movably mounted on the sealing cover. The clamping structure includes an operating component and a clamping component. The operating component can drive the clamping component to a locked position or a released position. When the clamping assembly is in the locked position, the filter bottle body is fixedly locked to the sealing cap; when the clamping assembly is in the released position, the filter bottle body can be detached from the sealing cap. A sealing valve structure is movably mounted on the water inlet channel corresponding to the operating component; The operating components also include a limiting spring. Under the action of external force, the sealing valve structure is in a depressurization state where it is driven by the limiting spring to move toward the filter chamber to release the pressure inside the filter chamber.

[0006] Beneficial Effects: This application simplifies the operation steps and improves the convenience of filter element replacement by linking the operating components of the clamping structure with the sealing valve structure. Simultaneously, the operation of depressurizing before clamping ensures that the pressure inside the filter chamber is released before the filter bottle body is released, avoiding water splashing or spraying that may occur during pressurized disassembly, thus improving operational safety. Compared to traditional threaded tightening methods, the clamping structure of this application is more labor-saving and faster to operate, and the clamping force is uniform and stable, which helps ensure the reliability of the seal between the filter bottle body and the sealing cap.

[0007] In one optional embodiment, the sealing cover is provided with: a first mounting post, a second mounting post, a third mounting post, and a fourth mounting post; the third mounting post is disposed at the center of the sealing cover, and the first mounting post, the second mounting post, and the fourth mounting post are arranged around the third mounting post, with the first mounting post and the second mounting post symmetrically arranged on both sides of the line connecting the center of the third mounting post and the center of the fourth mounting post; The operating components include: A linkage rod is movably mounted on the third mounting post, and a moving groove is provided on the linkage rod corresponding to the fourth mounting post, and the fourth mounting post is inserted into the moving groove; A handle, which is fixed to the end of the linkage rod away from the third mounting post.

[0008] In one alternative embodiment, the clamping assembly includes two clamping arms arranged symmetrically about the central axis of the third mounting post. The clamping arm includes a connecting part and a clamping part. One end of the connecting part is connected to the linkage rod, and the clamping part is connected to the other end of the connecting part away from the linkage rod.

[0009] In one optional implementation, the two clamping arms are a first clamping arm and a second clamping arm; The first clamping arm has a first guide groove corresponding to the first mounting post, and the first guide groove is adapted to the first mounting post for installation. The second clamping arm has a second guide groove corresponding to the second mounting post, and the second guide groove is adapted to the second mounting post for installation.

[0010] Beneficial effects: Through the above arrangement, the first and second mounting columns are symmetrically arranged about the center line connecting the third and fourth mounting columns. This ensures that the two clamping arms experience symmetrical and uniform forces during movement, applying a balanced clamping force to the filter bottle body and avoiding problems such as poor sealing or filter bottle tilting caused by uneven loading. The cooperation structure between the moving groove on the linkage rod and the fourth mounting column limits the rotation stroke of the operating component within a preset range, preventing damage to parts due to excessive rotation and ensuring a stable locking or releasing position for each operation.

[0011] In one optional embodiment, a lifting structure is further included, the lifting structure comprising: A rack is fixedly mounted on the clamping arm; A gear is fitted onto a threaded shaft fixed to the sealing cover. The gear has an internal thread in its inner hole. The gear engages with the threaded shaft through the internal thread and meshes with the rack.

[0012] Beneficial effects: By incorporating a lifting structure consisting of a rack and pinion connected to a gear threaded to the sealing cap, the horizontal movement of the clamping arm is converted into the rotational movement of the gears. Furthermore, the threaded connection converts this rotational movement into the axial lifting movement of the gears. This allows the clamping arm to automatically move downwards while simultaneously opening outwards, further increasing the separation space and detachment gap between the filter bottle body and the sealing cap. This enables the filter bottle body to detach from the sealing cap more smoothly, improving the convenience and efficiency of filter replacement.

[0013] In one optional embodiment, the first end of the limiting spring is mounted on the sealing cover, and the second end of the limiting spring is arranged corresponding to the sealing valve structure. At least a portion of the limiting spring is U-shaped to form a limiting groove for limiting the linkage.

[0014] Beneficial effects: By adding a limiting spring to the operating components, the limiting groove formed by its "U"-shaped bend can physically limit the rotation stroke of the linkage rod, prevent misoperation, and improve the operational safety of the filter bottle structure.

[0015] In one optional embodiment, the sealing cover is further provided with a through hole that communicates with the water inlet channel; The sealing valve structure includes: The exhaust valve body is movably installed in the through hole, and an exhaust gap is left between the outer wall of the exhaust valve body and the through hole; A spring, one end of which is connected to the exhaust valve body and the other end of which abuts against the inner wall of the through hole, applies an elastic force to the exhaust valve body to move it away from the filter bottle body; A valve plug is installed at one end of the exhaust valve body near the filter bottle body, and the valve plug is adapted to the end of the through hole near the filter bottle body to seal the through hole.

[0016] Beneficial effects: When the user presses the second end of the limiting spring, a downward pressure is applied to the exhaust valve body. This pressure overcomes the elastic force of the spring, pushing the exhaust valve body downward along the through hole. The downward movement of the exhaust valve body causes the valve plug at its lower end to move downward simultaneously, causing the valve plug to disengage from the sealing surface at the lower end of the through hole. At this time, the lower opening of the through hole is opened, and the high-pressure gas or pressurized water vapor in the filter chamber passes sequentially through the lower opening of the through hole, the exhaust gap between the outer wall of the exhaust valve body and the inner wall of the through hole, and is discharged into the outside atmosphere from the upper opening of the through hole, thereby realizing the pressure release in the filter chamber and facilitating the subsequent disassembly of the filter bottle body and the sealing cap.

[0017] When the limit spring is reset, the exhaust valve body is reset upward under the elastic restoring force of the spring, which drives the valve plug to press back onto the port sealing surface at the lower end of the through hole, sealing the through hole again and restoring the filter chamber to a sealed state.

[0018] Through the above design, the exhaust gap ensures that gas and pressurized water vapor can be smoothly discharged during exhaust, while the narrow gap channel can intercept and buffer small filter particles or impurities that may be carried out with the airflow, thus reducing pollution to the external environment.

[0019] In an optional implementation, it further includes a component disposed within the filter chamber: A filter element cover is installed on the top of the filter element, and a first limiting cylinder is provided on the filter element cover. The first limiting cylinder is inserted into the middle hole of the filter element. A filter element lower cover is installed at the bottom of the filter element, and a second limiting cylinder is provided on the filter element lower cover. The second limiting cylinder is inserted into the end of the central hole away from the valve plug. The water outlet channel is tightly abutted against the side of the filter element cover away from the filter element and is connected to the central hole.

[0020] In one optional embodiment, the filter chamber is further provided with a fixing ring for fixing the filter element, the fixing ring being disposed between the filter element and the filter bottle body.

[0021] In one optional embodiment, the sealing cap is provided with a fixing hook; The outer wall of the filter bottle body is provided with a hook protrusion corresponding to the fixed hook. The hook protrusion is installed in the fixed hook to connect the filter bottle body and the sealing cap. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the filter bottle according to an embodiment of the present invention; Figure 2 This is an internal sectional view of the filter bottle structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the sealing cap and clamping structure according to an embodiment of the present invention; Figure 4 This is an internal sectional view of the sealing cap according to an embodiment of the present invention; Explanation of reference numerals in the attached figures: 1. Sealing cap; 11. Water inlet channel; 12. Water outlet channel; 13. First mounting post; 14. Second mounting post; 15. Third mounting post; 16. Fourth mounting post; 17. Fixing hook; 2. Filter bottle body; 21. Filter chamber; 22. Filter element top cover; 23. Filter element bottom cover; 24. Fixing ring; 3. Filter element; 4. Clamping structure; 41. Operating component; 411. Linkage rod; 412. Handle; 42. Clamping component; 421. First clamping arm; 422. Second clamping arm; 423. First guide groove; 424. Second guide groove; 5. Sealing valve structure; 51. Exhaust valve body; 52. Spring; 53. Valve plug; 6. Lifting structure; 61. Rack; 62. Gear; 63. Threaded shaft; 7. Limiting spring; 71. Button; 8. Cover. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] However, in practical use, this threaded connection method has revealed many shortcomings. First, when installing or replacing filter media, operators must use a special wrench that matches the thread specification to apply sufficient torque to tighten or loosen the cap. The operation is laborious and time-consuming, especially in space-constrained installation environments where the wrench's range of motion is limited, further exacerbating the inconvenience. More importantly, the complex stress state of the thread makes disassembly difficult, and factors such as material creep and thread wear can easily pose hidden dangers to the safe operation of the equipment.

[0026] To solve the above technical problems, the following will be combined with... Figures 1 to 4 The following describes embodiments of the present invention.

[0027] According to an embodiment of the present invention, in one aspect, a filter bottle structure is provided, comprising a sealing cap 1, a filter bottle body 2, a clamping structure 4, and a sealing valve structure 5.

[0028] like Figures 1 to 4 As shown, the sealing cap 1 has a circular cap-like structure with a protrusion along its diameter on its upper surface. The inlet channel 11 and outlet channel 12 are disposed within this protrusion, both having an "L"-shaped structure. The filter bottle body 2 has a cup-shaped structure and is detachably mounted on the sealing cap 1. The filter bottle body 2 contains a filter chamber 21 for accommodating the filter element 3. One end of the inlet channel 11 is connected to the upstream inlet pipe, and the other end is connected to the filter chamber 21. One end of the outlet channel 12 is connected to the downstream outlet pipe, and the other end is connected to the filter chamber 21. The inlet channel 11 and outlet channel 12 are isolated from each other on the sealing cap 1 and do not interfere with each other.

[0029] The clamping structure 4 is movably mounted on the upper surface of the sealing cap 1 away from the filter bottle body 2. The clamping structure 4 includes an operating component 41 and a clamping component 42. The operating component 41 can drive the clamping component 42 to clamp to a locked position, fitting against the connection between the sealing cap 1 and the filter bottle body 2 to securely lock the sealing cap 1 and the filter bottle body 2 together, ensuring a stable and reliable sealing fit. Alternatively, the operating component 41 can also drive the clamping component 42 to open to a release position, away from the sealing cap 1 and the filter bottle body 2. In this case, the filter bottle body 2 can freely detach from the sealing cap 1, facilitating the user to remove the filter bottle body 2 for operations such as replacing the filter element 3.

[0030] The sealing valve structure 5 is movably mounted on the water inlet channel 11 corresponding to the operating component 41. The sealing valve structure 5 has the function of being driven by the limiting spring 7 in the operating component 41 to move toward the filter chamber 21 to release the pressure inside the filter chamber 21.

[0031] When the user applies external force to the operating component 41, the limiting spring 7 can move the sealing valve structure 5 to disengage it from its blocking position, forming a pressure relief channel between the water inlet channel 11 and the filter chamber 21. The pressurized water in the filter chamber 21 can then be discharged through this channel, thus releasing the pressure within the filter chamber 21. When the operating component 41 is rotated in the reverse direction to the locking position and the external force is removed, the sealing valve structure 5 re-blocks the passage, restoring the sealing state.

[0032] When filter element 3 needs to be replaced, the user first moves the sealing valve structure 5 towards the filter chamber 21 via the limiting spring 7, opening the pressure relief channel and releasing the residual pressure in the filter chamber 21. Then, the user rotates the operating component 41, causing it to move the clamping component 42 from the locked position to the released position, releasing the clamping lock on the filter bottle body 2. Because the pressure relief operation is performed before the clamping component 42 is fully released, water splashing or spraying caused by disassembling the filter bottle body 2 under pressure is avoided, improving operational safety. The user removes the filter bottle body 2 from the sealing cover 1 to replace the filter element 3. After replacing the filter element 3, the user re-fits the filter bottle body 2 back into place with the sealing cover 1, and then rotates the operating component 41 in the opposite direction, causing it to move the clamping component 42 from the released position to the locked position. Subsequently, the sealing valve structure 5 resets, sealing the pressure relief channel and restoring the filter chamber 21 to a sealed state, allowing normal water filtration to begin.

[0033] This application simplifies the operation steps and improves the convenience of replacing the filter element 3 by linking the operating component 41 of the clamping structure 4 with the sealing valve structure 5. Simultaneously, the operation of depressurizing before clamping ensures that the pressure in the filter chamber 21 is released before the filter body 2 is released, avoiding water splashing or spraying that may occur during pressurized disassembly, thus improving operational safety. Compared with the traditional threaded tightening method, the clamping structure 4 of this application is more labor-saving and faster to operate, and the clamping force is uniform and stable, which helps to ensure the sealing reliability between the filter body 2 and the sealing cap 1.

[0034] In one embodiment, such as Figure 3As shown, a first mounting post 13, a second mounting post 14, a third mounting post 15, and a fourth mounting post 16 are fixedly disposed on the sealing cover 1. The third mounting post 15 is located at the geometric center of the sealing cover 1, serving as the rotation center of the entire operating assembly 41. The first mounting post 13, the second mounting post 14, and the fourth mounting post 16 are all arranged around the third mounting post 15 on the surface of the sealing cover 1. Specifically, the fourth mounting post 16 is located on one side of the third mounting post 15, while the first mounting post 13 and the second mounting post 14 are symmetrically arranged on both sides of the line connecting the center of the third mounting post 15 and the center of the fourth mounting post 16. That is, this line constitutes the axis of symmetry between the first mounting post 13 and the second mounting post 14, making the first mounting post 13 and the second mounting post 14 mirror symmetrical with respect to this line.

[0035] The operating component 41 includes a linkage 411 and a handle 412. The linkage 411 is movably mounted on the third mounting post 15. Specifically, the linkage 411 passes through the third mounting post 15 in sequence via a vertical fixing member, so that the linkage 411 is movably mounted on the third mounting post 15. The linkage 411 can not only rotate around the central axis of the third mounting post 15, but also move up and down along the axis of the third mounting post 15.

[0036] A movable groove is provided on the linkage 411 corresponding to the position of the fourth mounting post 16. This movable groove is an arc-shaped groove, and the fourth mounting post 16 is inserted into the movable groove. The movable groove cooperates with the fixed fourth mounting post 16 to limit the rotational stroke and movement trajectory of the linkage 411. A handle 412 is fixedly connected to the end of the linkage 411 away from the third mounting post 15, that is, the free end of the linkage 411, for the user to grip and apply operating force.

[0037] The clamping assembly 42 includes two clamping arms arranged symmetrically about the central axis of the third mounting post 15, namely the first clamping arm 421 and the second clamping arm 422. Each clamping arm includes a connecting part and a clamping part. One end of the connecting part is connected to the linkage rod 411, and the clamping part is connected to the other end of the connecting part away from the linkage rod 411. The clamping part is generally L-shaped, and the lower horizontal part can be locked onto the bottom surface of the sealing edge of the filter bottle body 2 to fix the filter bottle body 2 to the sealing cap 1.

[0038] Furthermore, a first guide groove 423 is formed on the first clamping arm 421 corresponding to the first mounting post 13. The first guide groove 423 is adapted to be installed with the first mounting post 13, that is, the first mounting post 13 passes through the first guide groove 423 and can slide relative to it. A second guide groove 424 is formed on the second clamping arm 422 corresponding to the second mounting post 14. The second guide groove 424 is adapted to be installed with the second mounting post 14, that is, the second mounting post 14 passes through the second guide groove 424 and can slide relative to it. The movement direction of the two clamping arms is constrained by the cooperation of the guide grooves and the mounting posts.

[0039] When the user grips the handle 412 and applies rotational force, the handle 412 drives the linkage 411 to rotate around the central axis of the third mounting post 15. When the linkage 411 rotates, the position of its movable groove relative to the fixed fourth mounting post 16 changes, and the inner wall of the movable groove abuts against the fourth mounting post 16, thereby limiting and guiding the rotation angle range of the linkage 411.

[0040] As the linkage rod 411 rotates, it drives the connecting parts of the first clamping arm 421 and the second clamping arm 422 to move synchronously. Driven by the linkage rod 411 and limited by the mounting post and guide groove, the connecting parts of the two clamping arms move along the extension directions of the first guide groove 423 and the second guide groove 424, thereby causing their respective clamping parts to move closer or further apart along the radial direction of the sealing cover 1. When the two clamping parts move closer together, the filter bottle body 2 is locked in place. Figure 3 As shown, when the fourth mounting post 16 is located at the rightmost end of the moving groove, the first clamping arm 421 and the second clamping arm 422 approach each other. At this time, the clamping assembly 42 is in the locked position that fixes and locks the filter bottle body and the sealing cap. From a top view, when the linkage rod 411 is rotated counterclockwise to drive the two clamping parts to move away from each other, when the fourth mounting post 16 is located at the leftmost end of the moving groove, the first clamping arm 421 and the second clamping arm 422 open, realizing the release of the filter bottle body 2. At this time, the clamping assembly 42 is in the release position that releases the filter bottle body and the sealing cap.

[0041] With the above arrangement, the first mounting post 13 and the second mounting post 14 are symmetrically arranged about the center line connecting the third mounting post 15 and the fourth mounting post 16. This ensures that the two clamping arms are subjected to symmetrical and uniform forces during movement, applying a balanced clamping force to the filter bottle body 2 and avoiding problems such as poor sealing or filter bottle tilting caused by uneven loading. The cooperation structure between the moving groove on the linkage rod 411 and the fourth mounting post 16 limits the rotation stroke of the operating component 41 to a preset range, preventing damage to parts due to excessive rotation and ensuring a stable locking or releasing position for each operation.

[0042] In one embodiment, such as Figure 3 As shown, the filter bottle structure also includes a lifting structure 6. Two lifting structures 6 are provided, corresponding to the first clamping arm 421 and the second clamping arm 422 respectively. Taking the lifting structure 6 corresponding to the first clamping arm 421 as an example, its specific structure includes a rack 61 and a gear 62. The rack 61 is fixedly mounted on the first clamping arm 421. The length direction of the rack 61 is horizontal, with its tooth surface facing the gear 62, and it has continuously arranged transmission teeth. A vertically arranged threaded shaft 63 is fixedly mounted on the sealing cover 1. This threaded shaft 63 is integrally formed with or fixedly connected to the sealing cover 1. The central hole of the gear 62 has an internal thread, and the gear 62 is fitted onto the threaded shaft 63 through this internal thread, thus forming a threaded engagement with the sealing cover 1. Simultaneously, the external circumferential teeth of the gear 62 mesh with the transmission teeth on the rack 61. The corresponding arrangement of the guide groove and the mounting post ensures that the rack 61 is always meshed with the gear 62. Limiting discs are also provided on the upper and lower sides of the gear 62, and the two limiting discs are also arranged to fit against the upper and lower end faces of the rack 61.

[0043] When the user operates the handle 412 to drive the linkage 411 to rotate, the linkage 411 drives the two clamping arms to move horizontally along the radial direction of the sealing cover 1. During this process, since the rack 61 is fixedly installed on the clamping arms, the horizontal movement of the clamping arms will drive the rack 61 to perform a synchronous horizontal linear movement.

[0044] When rack 61 moves horizontally, it remains engaged with gear 62, and the linear motion of rack 61 drives gear 62 to rotate around threaded shaft 63. Because the center hole of gear 62 and the threaded shaft 63 on sealing cover 1 are threadedly connected, the axial height of gear 62 relative to threaded shaft 63 changes accordingly as it rotates; that is, gear 62 moves upward or downward along threaded shaft 63. Through a preset correspondence between the direction of the thread and the direction of rack 61 movement, for example, when the clamping arm opens outward to the release position, rack 61 drives gear 62 to rotate forward, causing gear 62 to move downward along threaded shaft 63. Gear 62 pushes the clamping arm downward, thereby causing the entire clamping arm and operating assembly 41 to move downward, further disengaging the clamping part from the outer wall or outer flange of filter bottle body 2, increasing the axial clearance between filter bottle body 2 and sealing cover 1.

[0045] By setting up a lifting structure 6 consisting of a rack 61 and a gear 62 threadedly connected to the sealing cover 1, the horizontal movement of the clamping arm is converted into the rotational movement of the gear 62, and further converted into the axial lifting movement of the gear 62 through threaded engagement. This allows the clamping arm to automatically move downwards while opening outwards, further increasing the separation space and detachment gap between the filter bottle body 2 and the sealing cover 1, enabling the filter bottle body 2 to detach from the sealing cover 1 more smoothly, and improving the convenience and disassembly efficiency of the filter element 3 replacement operation.

[0046] In one embodiment, such as Figures 1 to 4 As shown, the operating component 41 also includes a limiting spring 7. The limiting spring 7 is formed by stamping and bending a flexible metal sheet. The limiting spring 7 has a first end and a second end, wherein the first end of the limiting spring 7 is fixedly mounted on the sealing cover 1. The second end of the limiting spring 7 is arranged corresponding to the sealing valve structure 5.

[0047] The middle position of the limiting spring 7 has a "U"-shaped bending structure, forming a limiting groove for limiting the linkage rod 411. The width of the limiting groove is adapted to the rod diameter of the linkage rod 411 or the outer diameter of the limiting protrusion provided on the linkage rod 411, so that the corresponding part of the linkage rod 411 can be embedded in the limiting groove and move relative to each other along the extension direction of the groove.

[0048] In the assembled state of the filter bottle structure, the first end of the limiting spring 7 is fixed to the sealing cover 1 and remains stationary. The side edge of the connecting rod 411 or the limiting pin provided on the connecting rod 411 passes through the limiting groove. At this time, the connecting rod 411 is restricted and cannot move.

[0049] Before rotating the linkage rod 411 from the locked position to the released position, the second end of the limiting spring 7 must be pressed. The sealing valve structure 5 moves towards the filter chamber 21, causing the linkage rod 411 to disengage from the limiting groove. At this time, the linkage rod 411 can rotate freely, and its bottom surface abuts against the top of the limiting spring 7. When it is necessary to return the linkage rod 411 to the locked position, simply rotate the linkage rod 411 until it moves above the limiting groove. The limiting spring 7 resets under its own elastic restoring force, and the second end retracts accordingly. The sealing valve structure 5 resets under its own elastic force, thus achieving a seal again.

[0050] In one embodiment, such as Figures 1 to 4 As shown, a button 71 is also fixedly installed at the second end of the limiting spring 7, so as to facilitate pressing the sealing valve structure 5. A cover 8 is also provided on the top of the entire filter bottle structure, which is fitted onto the sealing cover 1. The cover 8 is adapted to the outer contour of the sealing cover 1. The cover 8 covers the clamping structure 4 inside it to ensure its working environment.

[0051] Button 71 protrudes upward through the cover 8, and the cover 8 is provided with a groove. The groove engages with the protrusion of the sealing cover 1 to prevent the cover 8 from shifting during operation.

[0052] This embodiment adds a limiting spring 7 to the operating component 41. The limiting groove formed by its "U"-shaped bend can accurately limit the rotation stroke of the linkage rod 411, prevent misoperation, and improve the operational safety of the filter bottle structure.

[0053] In one embodiment, such as Figure 4 As shown, the sealing cap 1 also has a through hole that penetrates the upper and lower surfaces of the sealing cap 1 and connects to the water inlet channel 11 provided on the sealing cap 1. One end of the through hole opens on the side of the sealing cap 1 facing the filter bottle body 2 and intersects with or directly connects to the flow channel of the water inlet channel 11. The other end opens on the side of the sealing cap 1 facing away from the filter bottle body 2 and is used to install the exhaust valve body 51. The through hole is generally circular.

[0054] The sealing valve structure 5 includes an exhaust valve body 51, a spring 52, and a valve plug 53. The exhaust valve body 51 has a columnar structure, its shape is adapted to the shape of the through hole, and it is movably installed inside the through hole. The outer diameter of the exhaust valve body 51 is slightly smaller than the inner diameter of the through hole, thereby forming an annular exhaust gap between the outer wall of the exhaust valve body 51 and the inner wall of the through hole. This exhaust gap constitutes a flow channel for gas to be discharged from the filter chamber 21.

[0055] A spring 52 is fitted onto the outside of the exhaust valve body 51 and disposed inside the through hole. One end of the spring 52 is connected to the exhaust valve body 51, and the other end of the spring 52 abuts against the inner wall of the through hole. The spring 52 applies an elastic force to the exhaust valve body 51, causing it to move away from the filter bottle body 2; that is, the spring 52 always has a tendency to push the exhaust valve body 51 upward. A valve plug 53 is fixedly installed on the end of the exhaust valve body 51 near the filter bottle body 2. The valve plug 53 is made of elastic sealing material, and its outer contour is adapted to the shape of the port at the end of the through hole near the filter bottle body 2.

[0056] When the filter bottle structure is operating normally, spring 52 applies an upward elastic force to the exhaust valve body 51, causing the exhaust valve body 51 to tend to move upward. Since a valve plug 53 is fixedly installed at the lower end of the exhaust valve body 51, this elastic force is transmitted to the valve plug 53 through the exhaust valve body 51, causing the valve plug 53 to be tightly pressed against the sealing surface of the port near the end of the through hole close to the filter bottle body 2, thereby sealing the through hole. At this time, the pressurized water in the filter chamber 21 cannot leak out through the through hole, and the water flow in the water inlet channel 11 normally enters the filter chamber 21 for filtration.

[0057] When the user presses the second end of the limiting spring 7, a downward pressure is applied to the exhaust valve body 51. This pressure overcomes the elastic force of the spring 52, pushing the exhaust valve body 51 downward along the through hole. The downward movement of the exhaust valve body 51 causes the valve plug 53 at its lower end to move downward simultaneously, causing the valve plug 53 to disengage from the port sealing surface at the lower end of the through hole. At this time, the lower opening of the through hole is opened, and the high-pressure gas or pressurized water vapor in the filter chamber 21 passes through the lower opening of the through hole, the exhaust gap between the outer wall of the exhaust valve body 51 and the inner wall of the through hole, and is discharged into the outside atmosphere from the upper opening of the through hole, thereby realizing the pressure release in the filter chamber 21 and facilitating the subsequent disassembly of the filter bottle body 2 and the sealing cap 1.

[0058] When the limit spring 7 is reset, the exhaust valve body 51 is reset upward under the elastic restoring force of the spring 52, which drives the valve plug 53 to press back onto the port sealing surface at the lower end of the through hole, sealing the through hole again and restoring the filter chamber 21 to a sealed state.

[0059] Through the above design, the exhaust gap ensures that gas and pressurized water vapor can be smoothly discharged during exhaust, while the narrow gap channel can intercept and buffer small filter particles or impurities that may be carried out with the airflow, thus reducing pollution to the external environment.

[0060] In one embodiment, such as Figure 2 As shown, the filter element cover 22 is installed on the top of the filter element 3. Specifically, the filter element cover 22 has a disc-shaped structure and covers the upper end face of the filter element 3, providing axial positioning and protective coverage for the top of the filter element 3. A first limiting cylinder is provided on the filter element cover 22, protruding downwards from the center of the cover, with its outer diameter matching the inner diameter of the central hole of the filter element 3. In the assembled state, the first limiting cylinder is inserted into the central hole of the filter element 3 from top to bottom, radially positioning and centering the upper end of the filter element 3, preventing radial displacement or shaking of the filter element 3 relative to the filter chamber 21 during use.

[0061] The lower cover 23 of the filter element is installed at the bottom end of the filter element 3. Corresponding to the upper cover 22 of the filter element, the lower cover 23 has a disc-shaped structure and covers the lower end face of the filter element 3. A second limiting cylinder is provided on the lower cover 23. The second limiting cylinder protrudes upward from the center position of the lower cover 23, and its outer diameter is also adapted to the inner diameter of the central hole of the filter element 3. In the assembled state, the second limiting cylinder is inserted from bottom to top at the end of the central hole away from the sealing cover 1, and is inserted opposite to the first limiting cylinder in the central hole or occupies the upper and lower ends of the central hole respectively, jointly providing axial and radial positioning constraints for the filter element 3.

[0062] The water outlet channel 12 and the central hole of the filter element 3 are kept in communication through the internal channel or opening of the filter element cover 22. Specifically, a sealing ring is provided between the lower end of the water outlet channel 12 and the upper surface of the filter element cover 22. The pressure of the sealing cover 1 when it is locked makes the water outlet channel 12 tightly abut against the surface of the filter element cover 22, forming a sealed fit. The water flowing in the filtration chamber 21 is filtered through the side wall of the filter element 3 and then gathers in the central hole of the filter element 3. It then enters the water outlet channel 12 through the internal channel of the filter element cover 22 and is finally discharged from the filter bottle structure.

[0063] The filter chamber 21 is also provided with a fixing ring 24 for fixing the filter element 3. The fixing ring 24 is located between the filter element 3 and the filter bottle body 2. Specifically, the fixing ring 24 has an annular sleeve structure. The fixing ring 24 is fitted on the outer peripheral wall of the filter element 3 and located between the filter element 3 and the inner wall of the filter bottle body 2, radially clamping and fixing the filter element 3 in the filter chamber 21 to prevent the filter element 3 from shifting under water pressure.

[0064] In one embodiment, such as Figures 1 to 4 As shown, a fixing hook 17 is provided on the sealing cap 1. The overall structure is an "L"-shaped hook. A hooking protrusion is provided on the outer wall of the filter bottle body 2 corresponding to the position of the fixing hook 17. The axial position of the hooking protrusion on the filter bottle body 2 corresponds to the hook position of the fixing hook 17, and its outline size is adapted to the holding space of the fixing hook 17, so that the hooking protrusion can be embedded in the fixing hook 17 and form a detachable mechanical interlock.

[0065] When the filter bottle body 2 and the sealing cap 1 are assembled, the hook protrusion rotates synchronously with the filter bottle body 2 and slides into the opening of the fixing hook 17 until the hook protrusion is stopped and limited by the hook part of the hook, thereby forming a relative positioning and connection between the filter bottle body 2 and the sealing cap 1 in the axial and circumferential directions. This connection plays an auxiliary fixing role after the clamping structure 4 is locked, and can still maintain the temporary hook state between the filter bottle body 2 and the sealing cap 1 after the clamping structure 4 is released, preventing the filter bottle body 2 from falling directly.

[0066] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A filter bottle structure, characterized in that, include: A sealing cap (1) is provided with an inlet channel (11) and an outlet channel (12). The filter bottle body (2) is detachably fitted with the sealing cap (1). The filter bottle body (2) is provided with a filter chamber (21) for accommodating the filter element (3). The filter chamber (21) is connected to the water inlet channel (11) and the water outlet channel (12). The clamping structure (4) is movably mounted on the sealing cover (1). The clamping structure (4) includes an operating component (41) and a clamping component (42). The operating component (41) can drive the clamping component (42) to a locked position or a released position. When the clamping assembly (42) is in the locked position, the filter bottle body (2) is fixedly locked to the sealing cap (1); when the clamping assembly (42) is in the released position, the filter bottle body (2) can be detached from the sealing cap (1). The sealing valve structure (5) is movably mounted on the water inlet channel (11) corresponding to the operating component (41); The operating component (41) also includes a limiting spring (7). Under the action of external force, the sealing valve structure (5) is in a depressurization state where it is driven by the limiting spring (7) to move toward the filter chamber (21) to release the pressure inside the filter chamber (21).

2. The filter bottle structure according to claim 1, characterized in that, The sealing cover (1) is provided with: a first mounting post (13), a second mounting post (14), a third mounting post (15) and a fourth mounting post (16); the third mounting post (15) is located at the center of the sealing cover (1), the first mounting post (13), the second mounting post (14) and the fourth mounting post (16) are arranged around the third mounting post (15), and the first mounting post (13) and the second mounting post (14) are symmetrically arranged on both sides of the line connecting the center of the third mounting post (15) and the center of the fourth mounting post (16); The operating component (41) includes: A linkage rod (411) is movably mounted on the third mounting post (15). A moving groove is provided on the linkage rod (411) corresponding to the fourth mounting post (16). The fourth mounting post (16) is inserted into the moving groove. A handle (412) is fixed to one end of the linkage (411) away from the third mounting post (15).

3. The filter bottle structure according to claim 2, characterized in that, The clamping assembly (42) includes two clamping arms arranged symmetrically about the central axis of the third mounting post (15); The clamping arm includes a connecting part and a clamping part. One end of the connecting part is connected to the linkage rod (411), and the clamping part is connected to the other end of the connecting part away from the linkage rod (411).

4. The filter bottle structure according to claim 3, characterized in that, The two clamping arms are a first clamping arm (421) and a second clamping arm (422). The first clamping arm (421) is provided with a first guide groove (423) corresponding to the first mounting post (13), and the first guide groove (423) is adapted to the first mounting post (13); The second clamping arm (422) has a second guide groove (424) corresponding to the second mounting post (14), and the second guide groove (424) is adapted to the second mounting post (14).

5. The filter bottle structure according to claim 4, characterized in that, It also includes a lifting structure (6), which includes: The rack (61) is fixedly installed on the clamping arm; The gear (62) is sleeved on the threaded shaft (63) fixed on the sealing cover (1). The inner hole of the gear (62) is provided with an internal thread. The gear (62) is threadedly engaged with the threaded shaft (63) through the internal thread. The gear (62) meshes with the rack (61).

6. The filter bottle structure according to claim 2, characterized in that, The first end of the limiting spring (7) is installed on the sealing cover (1), and the second end of the limiting spring (7) is arranged corresponding to the sealing valve structure (5); At least a portion of the limiting spring (7) is U-shaped to form a limiting groove for limiting the linkage (411).

7. The filter bottle structure according to claim 3, characterized in that, The sealing cover (1) is also provided with a through hole that communicates with the water inlet channel (11); The sealing valve structure (5) includes: The exhaust valve body (51) is movably installed in the through hole, and an exhaust gap is left between the outer wall of the exhaust valve body (51) and the through hole; A spring (52) is connected at one end to the exhaust valve body (51) and at the other end to the inner wall of the through hole. The spring (52) applies an elastic force to the exhaust valve body (51) to move it away from the filter bottle body (2). A valve plug (53) is installed on one end of the exhaust valve body (51) near the filter bottle body (2), and the valve plug (53) is adapted to the end of the through hole near the filter bottle body (2) to seal the through hole.

8. The filter bottle structure according to claim 7, characterized in that, It also includes the filter chamber (21): A filter element cover (22) is installed on the top of the filter element (3). A first limiting cylinder is provided on the filter element cover (22), and the first limiting cylinder is inserted into the middle hole of the filter element (3). The filter element lower cover (23) is installed at the bottom of the filter element (3). A second limiting cylinder is provided on the filter element lower cover (23). The second limiting cylinder is inserted into the end of the middle hole away from the valve plug (53). The water outlet channel (12) is closely abutted against the side of the filter element cover (22) away from the filter element (3) and is connected to the central hole.

9. The filter bottle structure according to claim 1, characterized in that, The filter chamber (21) is also provided with a fixing ring (24) for fixing the filter element (3), and the fixing ring (24) is disposed between the filter element (3) and the filter bottle body (2).

10. The filter bottle structure according to claim 1, characterized in that, The sealing cap (1) is provided with a fixing hook (17); The outer wall of the filter bottle body (2) is provided with a hook protrusion corresponding to the fixed hook (17). The hook protrusion is installed in the fixed hook (17) to connect the filter bottle body (2) and the sealing cap (1).

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