Multifunctional manual-automatic integrated pre-filter with top-mounted filter bottle

Abstract

The utility model relates to a multi-functional manual-automatic integrated prefilter with a top-mounted filter bottle, which comprises a valve casing, a lamination filtering and backwashing mechanism and a filter bottle, the valve casing is provided with a raw water end, a purified water end, an upward filter bottle assembling end, a downward pollution discharge end and a valve casing cavity, the pollution discharge end is provided with a pollution discharge component, the filter bottle is fixed with the filter bottle assembling end in a matched manner, and the filter bottle assembling end is provided with a water inlet and a water outlet. The lamination filtering and backwashing mechanism is arranged in the filter bottle, the lamination filtering and backwashing mechanism comprises a lamination filtering mechanism and a backwashing mechanism which are coaxially arranged, the lamination filtering mechanism comprises a filtering lamination and a lamination framework, the backwashing mechanism at least comprises a backwashing framework, a cavity between the lamination filtering mechanism and the filter bottle forms a raw water cavity, and the backwashing framework is arranged in the raw water cavity. And a purified water cavity is formed in the laminated filtering mechanism. The three states of filtration, pollution discharge and backwashing pollution discharge can be switched, and the problems that axial movement of the backwashing framework fails, the distance between the laminations can be automatically adjusted, and the pollution discharge pipe is synchronously opened in the axial lifting process of the backwashing framework are solved.

Description

Technical Field

[0001] The utility model relates to a filter bottle mounted multifunctional manual and automatic pre-filter, belonging to the technical field of water purification equipment. Background Art

[0002] The mainstream pre-filter products in the prior art are of the filter bottle bottom type, including: a machine head, a filter bottle connected to the machine head at the upper end, and a drainage ball valve connected to the lower end of the filter bottle. A filter screen frame is arranged in the filter bottle, and a filter screen is arranged on the outer wall of the filter screen frame. During use, water flows into the gap between the filter bottle and the filter screen from the water inlet of the machine head, flows into the center of the filter screen frame after being filtered by the filter screen, and then flows from the center of the filter screen frame to the water outlet of the machine head. When sewage needs to be discharged, the drainage ball valve at the lower end of the filter bottle is opened to achieve it. In some installation occasions, this type of filter bottle bottom-mounted pre-filter is inconvenient to install. For this reason, the filter bottle top-mounted pre-filter is born in response to market demand. In addition to the water inlet, water outlet and filter bottle installation port, the valve head of this type of pre-filter also needs to be provided with a sewage outlet, that is, the function of the drainage ball valve originally arranged at the lower end of the filter bottle needs to be transferred to the valve head, so it is necessary to optimize and adjust the traditional backwashing axial adjustment structure. In addition, the pre-filter in the prior art has the combined functions of filtering and backwashing. During backwashing, the principle of pressure difference is used to allow the backwashing skeleton to achieve axial movement. This method also has certain defects, that is, it is easy to fail.

[0003] The laminated filter is composed of a group of laminated sheets with grooves on both sides. When water flows through the laminated sheets, the intersections formed by the edges of the grooves can intercept solids in the water. Since it has the functions of surface interception and deep condensation at the same time, the filtering effect is greatly improved. When the filter element laminated sheets need to be cleaned, they can be easily rinsed clean and then assembled for reuse. The prior art has laminated filters with backwashing function, but during backwashing, the spacing (tightness) between the laminated sheets cannot be automatically adjusted, affecting the efficiency and effect of backwashing. In addition, the sewage discharge structure of the existing pre-filter mostly uses a sewage pipe, which is opened by manually or electrically driving the sewage pipe to rotate. It is also a solution that those skilled in the art are trying to design to achieve the synchronous opening of the sewage pipe during the axial lifting and lowering of the backwashing skeleton. The present utility model realizes this design.

[0004] The utility model aims to provide a multifunctional manual-automatic pre-filter mounted on a filter bottle with a more optimized structure and easy to match installation occasions. It can realize the switching of three states of filtering, draining and backwashing draining, and solves the problems of axial movement failure of the backwashing skeleton, automatic adjustment of the tightness of the spacing between the laminations, and synchronous opening of the drain pipe during the axial lifting and lowering of the backwashing skeleton. Utility Model Content

[0005] The utility model aims to provide a multifunctional manual-automatic pre-filter mounted on a filter bottle with a more optimized structure and easy to match installation occasions. It can realize the switching of three states of filtering, draining and backwashing draining, and solves the problems of axial movement failure of the backwashing skeleton, automatic adjustment of the tightness of the spacing between the laminations, and synchronous opening of the drain pipe during the axial lifting and lowering of the backwashing skeleton.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] The filter bottle is mounted on a multifunctional manual and automatic pre-filter, comprising a valve housing, a lamination filtering and backwashing mechanism and a filter bottle, wherein the valve housing is provided with a raw water end, a clean water end, an upward filter bottle assembly end, a downward sewage discharge end and a valve housing cavity, the sewage discharge end is provided with a sewage discharge assembly, the filter bottle is fixed with the filter bottle assembly end, the lamination filtering and backwashing mechanism is arranged in the filter bottle, the lamination filtering and backwashing mechanism comprises a coaxially arranged lamination filtering mechanism and a backwashing mechanism, the lamination filtering mechanism comprises a filter lamination and a lamination skeleton, the backwashing mechanism comprises at least a backwashing skeleton, the cavity between the lamination filtering mechanism and the filter bottle constitutes a raw water cavity, and the interior of the lamination filtering mechanism constitutes a purified water cavity, characterized in that: a flow channel switching assembly is arranged in the valve housing cavity, the flow channel switching assembly is provided with a raw water flow channel, a purified water flow channel, a sewage discharge flow channel and a backwashing water flow channel, the flow channel switching assembly is circumferentially rotating and sealingly connected to the valve housing cavity or axially sliding and sealingly connected, and the flow channel switching assembly rotates circumferentially or slides axially under the action of an external force to realize the flow channel switching between the filtering mode and the backwashing sewage discharge mode;

[0008] A rotating lifting mechanism is fixedly provided in the pre-filter, and the rotating lifting mechanism can cooperate with the backwashing frame, and the backwashing frame can be lifted and lowered relative to the laminated frame during the rotation of the rotating lifting mechanism, thereby opening or closing the backwashing filter screen;

[0009] A sewage discharge switching element is provided at the lower end of the backwashing frame, and the sewage discharge switching element can open or close the sewage discharge end as the backwashing frame rises and falls.

[0010] Preferably, a stacking adjusting piece is fixedly provided at the end of the backwashing skeleton, and the stacking adjusting piece can abut and compress the filter stacking or release the abutment to loosen the filter stacking. When the backwashing skeleton rises relative to the stacking skeleton, the stacking adjusting piece releases the abutment with the filter stacking and the filter stacking is loosened. When the backwashing skeleton descends relative to the stacking skeleton, the stacking adjusting piece abuts against the filter stacking and the filter stacking is compressed.

[0011] Preferably, the filter stack is sleeved on the stack frame and fixed by abutment through a stack adjusting member, and as the stack adjusting member abuts and releases, the filter stack can slide axially relative to the stack frame to be compressed and released.

[0012] Preferably, at least one guide column is provided at the end of the laminate frame, and the laminate adjustment member is provided with at least one matching guide groove, and through the cooperation between the guide column and the guide groove, the laminate adjustment member moves downward to achieve abutment, and moves upward to release the abutment.

[0013] Preferably, the lamination adjusting member is fixedly arranged at the end of the backwashing frame, and when the backwashing frame is raised relative to the lamination frame, the lamination adjusting member releases the contact with the filter lamination, and when the backwashing frame is lowered relative to the lamination frame, the lamination adjusting member contacts the filter lamination.

[0014] Preferably, the backwash skeleton includes a driving section and an adjusting section, and the lifting and lowering are achieved by the cooperation of the driving section and the rotating lifting mechanism. The adjusting section is provided with an elastic reset element, and the two ends of the elastic reset element are respectively abutted against the backwash skeleton and the laminated skeleton. When the backwash skeleton rises relative to the laminated skeleton, the elastic reset element is compressed. When the backwash skeleton descends relative to the laminated skeleton, the elastic reset element is restored and the backwash skeleton is promoted to descend under the action of the restoring force.

[0015] Preferably, the rotating lifting mechanism is fixed in the flow channel switching assembly and can rotate synchronously with the flow channel switching assembly. The rotating lifting mechanism includes a fixing part, a rotating shaft part and a guiding part with an inclination. It is fixed to the flow channel switching assembly through the fixing part and is rotatably connected to the backwashing skeleton through the rotating shaft part. An adaptive guide piece is also provided at the end of the backwashing skeleton. The axial adjustment of the backwashing skeleton is achieved through the cooperation between the guide piece and the guide part.

[0016] Preferably, the guide portion is arranged in a continuous arc shape along the circumference of the rotating lifting mechanism, and the height from the lowest point to the highest point of the guide portion is consistent with the maximum stroke of the axial adjustment of the backwashing skeleton.

[0017] Preferably, a limiting portion is further provided at the end of the guide portion, and the limiting portion is a limiting protrusion and / or an arc-shaped limiting groove.

[0018] Preferably, the flow channel switching assembly rotates under the action of external force, can close the raw water flow channel and / or the purified water flow channel, and open the backwash water flow channel, switching to the backwash mode; can open the raw water flow channel and the purified water flow channel, and close the backwash water flow channel, switching to the filtration mode.

[0019] Preferably, the channel switching component rotates 30-180° under the action of external force and switches to the backwash mode; the channel switching component rotates reversely and resets to the same angle under the action of external force and switches to the filtration mode.

[0020] The utility model realizes that in addition to setting the water inlet, water outlet and filter bottle installation port on the valve head, a sewage outlet is also set, that is, the function of the drainage ball valve originally set at the lower end of the filter bottle is transferred to the valve head, and the traditional backwashing axial adjustment structure is effectively optimized and adjusted. Specifically, during filtration, the flow channel switching component is rotated to realize the connection between the raw water end and the raw water flow channel, and the connection between the purified water flow channel and the clean water end is realized; when sewage needs to be discharged, the flow channel switching component is rotated, the raw water flow channel and / or the purified water flow channel are closed, and the sewage pipe is opened; when backwashing and sewage discharge are required, the backwashing water flow channel is connected with the raw water flow channel, and the impurities accumulated on the valve head are flushed, and then discharged through the sewage pipe.

[0021] Preferably, the filter bottle assembly end is provided with a quick-install structure assembled with the filter bottle, and the quick-install structure adopts a detachable structure, including a screw connection structure and a clamping structure. This quick-install structure is convenient for users to install, and is also convenient for replacement and maintenance of the filter bottle, or when the valve head is blocked by impurities, it is easy to disassemble and clean.

[0022] Preferably, at least one limiting portion A is provided in the valve housing cavity, and the flow channel switching assembly is provided with at least one matching limiting portion B, and the circumferential limiting or circumferential and axial synchronous limiting of the flow channel switching assembly is achieved through the cooperation of the limiting portion A and the limiting portion B. The circumferential limiting or circumferential and axial synchronous limiting is achieved through the simple cooperation of the limiting portions A\B, thereby avoiding axial misalignment of the flow channel switching assembly during circumferential rotation, and being able to conveniently determine the target position of the circumferential rotation.

[0023] More preferably, a limit portion A is provided at the upper and lower parts of the valve housing cavity, respectively, and the flow channel switching assembly is provided with two matching limit portions B, and the double limit of the flow channel switching assembly is achieved through the double cooperation of the upper and lower limit portions A and the limit portions B. The double limit is achieved through the simple cooperation of the double limit portions A\B, which avoids axial misalignment of the flow channel switching assembly during circumferential rotation, and can conveniently determine the target position of the circumferential rotation, further improving the reliability of the valve head flow channel switching.

[0024] Preferably, the limiting part A is a groove or a convex block structure, and the limiting part B is a convex block or a groove structure. This type of limiting structure is convenient for mold processing, easy to demould, and has high limiting reliability.

[0025] Preferably, the flow channel switching assembly is provided with a rotating drive member, which is a driving element extending axially upward to the bottom of the filter bottle and rotatingly sealed, and the flow channel switching assembly is driven by the rotation of the driving element, or the flow channel switching assembly is linked with the sewage discharge assembly, and the sewage discharge assembly is rotationally sealed with the sewage discharge end, and the rotation of the flow channel switching assembly is realized by the rotation of the sewage discharge assembly. The utility model designs two different rotating drive members, which respectively realize the drive from the top of the filter bottle or the drive from the sewage discharge end. The specific processing can be selected according to the needs, and both can effectively drive the flow channel switching assembly, better realize the flow channel switching function of the valve head, and have excellent practical performance.

[0026] Preferably, the rotating drive member is a driving element extending upward along the axial direction of the filter bottle, including a driving handle and a driving rod, one end of the driving rod is fixed to the flow channel switching assembly, and the other end is fixed to the driving handle; or the driving element includes a driving handle and a driving skeleton, and the two ends of the driving skeleton are directly or indirectly fixed to the flow channel switching assembly and the driving handle respectively; or the driving element includes a driving handle, and the skeleton of the filtering mechanism serves as the driving skeleton, and the two ends of the skeleton of the filtering mechanism are fixed to the driving handle and the flow channel switching assembly respectively.

[0027] Preferably, the flow channel switching component is linked with the sewage discharge component, the sewage discharge component includes a sewage discharge seal and a sewage discharge pipe, the sewage discharge seal is rotatably sealed and connected to the sewage discharge end, and the sewage discharge pipe is fixedly connected to the sewage discharge seal.

[0028] Preferably, the driving element is a manual driving element and / or an electric driving element, so as to realize manual, automatic or manual-automatic driving rotation of the flow channel switching component and improve the application scenarios of the product.

[0029] Preferably, a sealing element is provided between the flow channel switching assembly and the valve housing cavity, and a rotating seal or a sliding seal connection is achieved through the cooperation of the sealing element.

[0030] Preferably, a scraping mechanism is further provided outside the laminated filter mechanism, and the scraping mechanism can rotate relative to the laminated filter mechanism to scrape the inner wall of the filter bottle and / or the outer wall of the filter laminate.

[0031] Preferably, the scraping mechanism is provided with a scraping knob, which is coaxially arranged with the driving handle and rotatably sealed with the filter bottle, the end of the scraping knob is fixed to the scraping mechanism, and the scraping knob is manually driven or electrically driven.

[0032] Preferably, the scraping part of the scraping mechanism adopts any one or more of a plastic scraper, a silicone scraper or a brush.

[0033] Preferably, a water inlet vortex structure is also provided in the valve housing.

[0034] The beneficial effects of the utility model are as follows: 1) the utility model realizes that in addition to the water inlet, the water outlet and the filter bottle installation port being set on the valve head, a sewage outlet is also set, that is, the function of the drainage ball valve originally set at the lower end of the filter bottle is transferred to the valve head, and the traditional backwashing axial adjustment structure is effectively optimized and adjusted. Specifically, during filtration, the flow channel switching component is rotated to realize the connection between the raw water end and the raw water flow channel, and the connection between the purified water flow channel and the clean water end; when sewage needs to be discharged, the flow channel switching component is rotated to close the raw water flow channel and / or the purified water flow channel, and the sewage pipe is opened; 2) Through the circumferential limit or circumferential and axial synchronous limit of the simple limit part A\B, the axial misalignment of the flow channel switching component during circumferential rotation is avoided, and the target position of the circumferential rotation can be conveniently determined; 3) The utility model designs two different rotating drive parts, which respectively realize the drive from the top of the filter bottle or from the sewage discharge end. The specific processing can be selected according to the needs, and both can effectively drive the flow channel switching component, better realize the flow channel switching function of the valve head, and have excellent practical performance; 4) Through the cooperation of the guide part and the guide member, the axial adjustment of the backwashing skeleton is driven by external force, which overcomes the failure of the pressure difference principle in the prior art, and simultaneously realizes that the spacing between the laminations can be automatically adjusted and the sewage pipe is opened synchronously during the axial lifting and lowering of the backwashing skeleton. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a structural schematic diagram of the utility model;

[0037] Figure 2 It is an exploded view of the utility model;

[0038] Figure 3 It is an exploded view of the utility model;

[0039] Figure 4 It is an exploded view of the utility model;

[0040] Figure 5 It is an exploded view of the utility model;

[0041] Figure 6 It is an exploded view of the utility model;

[0042] Figure 7 It is a structural schematic diagram of the utility model;

[0043] Figure 8 yes Figure 7 A top view of

[0044] Fig. 9 yes Figure 1 Cross-sectional view (opening the raw water flow channel and the purified water flow channel);

[0045] Fig.10 yes Figure 1 Cross-sectional view (closing the raw water flow channel and the purified water flow channel);

[0046] Fig.11 yes Figure 1 Cross-sectional view (opening the raw water flow channel and the purified water flow channel, filtering);

[0047] Fig.12 yes Figure 1 Cross-sectional view (closing the raw water flow channel and the purified water flow channel, discharging sewage).

[0048] In the figure: 1. valve housing, 11. water inlet end, 12. water outlet end, 13. filter bottle assembly end, 14. sewage discharge end, 15. valve housing cavity, 2. flow channel switching assembly, 21. raw water flow channel, 22. clean water flow channel, 23. sewage discharge flow channel, 24. backwash water flow channel, 3. limiting part A, 4. limiting part B, 5. sewage discharge seal, 6. sewage discharge pipe, 7. rotating lifting mechanism, 71. fixing part, 72. rotating part, 73. guide part, 74. limiting part, 8. guide part, 9. driving handle, a. filter stack, b. stack frame, b1. guide column, c. stack adjustment part, c1. guide groove, d. backwash frame, d1. driving section, d2. adjusting section, d3 elastic reset element, e. scraping knob, f. water inlet vortex structure, g. sewage discharge switching element. DETAILED DESCRIPTION

[0049] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0050] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] In the description of the utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0052] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0053] Example 1

[0054] like Figure 1-6 As shown, the filter bottle top-mounted multifunctional manual and automatic pre-filter comprises a valve housing 1, a lamination filtering and backwashing mechanism and a filter bottle, wherein the valve housing 1 is provided with a raw water end 11, a clean water end 12, an upward filter bottle assembly end 13, a downward sewage discharge end 14 and a valve housing cavity 15, the sewage discharge end 14 is provided with a sewage discharge assembly, the filter bottle is fixedly matched with the filter bottle assembly end 13, the lamination filtering and backwashing mechanism is arranged in the filter bottle, the lamination filtering and backwashing mechanism comprises a coaxially arranged filtering mechanism and a backwashing mechanism, the lamination filtering mechanism comprises a filtering lamination a and a lamination frame b, the backwashing mechanism comprises a backwashing filter screen and a backwashing frame c ... backwashing filter screen comprises a backwashing filter screen and a backwashing frame c, the backwashing filter screen comprises a backwashing filter screen and a backwashing frame c, the back The cavity between the laminar filter mechanism and the filter bottle constitutes a raw water cavity, and the interior of the laminar filter mechanism constitutes a purified water cavity. A flow channel switching component 2 is provided in the valve housing cavity 15. The flow channel switching component 2 is provided with a raw water flow channel 21 corresponding to the raw water end 11, a purified water flow channel 22 corresponding to the filter bottle assembly end 13 and the clean water end 12, a sewage discharge flow channel corresponding to the sewage discharge end 14, and a backwash water flow channel 24 is further provided between the raw water flow channel 21 and the purified water flow channel 22. The flow channel switching component 2 is rotatably sealed and connected to the valve housing cavity 15. When the flow channel switching component 2 rotates circumferentially under the action of an external force, the flow channel switching of the filtering and backwashing modes is realized;

[0055] A rotating lifting mechanism 7 is fixedly provided in the flow channel switching assembly 2, and the rotating lifting mechanism 7 can cooperate with the backwashing frame, and the rotating lifting mechanism 7 realizes the lifting and lowering of the backwashing frame relative to the laminated frame b during the rotation of the flow channel switching assembly 2, thereby opening or closing the backwashing filter screen;

[0056] A sewage discharge switching element g is provided at the lower end of the backwashing frame d, and the sewage discharge switching element g can open or close the sewage discharge end as the backwashing frame d rises and falls.

[0057] In this embodiment, the filter laminate a is sleeved on the laminate frame b and fixed by the laminate adjusting member e, and as the laminate adjusting member e is abutted and released, the filter laminate a can slide axially relative to the laminate frame b to be pressed and released. The laminate frame b is provided with at least one guide column b1 at the end, and the laminate adjusting member e is provided with at least one matching guide groove e1. Through the cooperation between the guide column b1 and the guide groove e1, the laminate adjusting member e moves downward to achieve abutment, and moves upward to achieve release of abutment. The laminate adjustment member e is fixedly arranged at the end of the backwash skeleton d. When the backwash skeleton d rises relative to the laminate skeleton b, the laminate adjustment member e is released from the contact with the filter laminate a. When the backwash skeleton d descends relative to the laminate skeleton b, the laminate adjustment member e abuts against the filter laminate a. The backwash skeleton d comprises a driving section d1 and an adjustment section d2. The lifting and lowering are achieved by the driving section d1 cooperating with the rotating lifting mechanism 7. The adjustment section d2 is provided with an elastic reset element d3. The two ends of the elastic reset element d3 abut against the backwash skeleton d and the laminate skeleton b respectively. When the backwash skeleton d rises relative to the laminate skeleton b, the elastic reset element d3 is compressed. When the backwash skeleton d descends relative to the laminate skeleton b, the elastic reset element d3 is restored, and the backwash skeleton d is promoted to descend under the action of the restoring force.

[0058] Specifically, a lamination adjusting member d is fixedly provided at the end of the backwashing frame, and the lamination adjusting member d can abut against and press the filter lamination a or release the abutment to loosen the filter lamination a. When the backwashing frame c rises relative to the lamination frame b, the lamination adjusting member d releases the abutment with the filter lamination a, and the filter lamination a is loosened. When the backwashing frame c descends relative to the lamination frame b, the lamination adjusting member d abuts against the filter lamination a, and the filter lamination a is pressed. Specifically, the rotating lifting mechanism 7 is fixedly provided in the flow channel switching assembly 2 and can rotate synchronously with the flow channel switching assembly 2. The rotating lifting mechanism 7 includes a fixing portion 71, a rotating shaft portion 72, and a guide portion 73 with an inclination. The fixing portion 71 is fixed to the flow channel switching assembly 2, and the backwashing frame is rotatably connected to the rotating shaft portion 72. The end of the backwashing frame is also provided with an adaptive guide member 8. The axial adjustment of the backwashing frame is achieved through the cooperation of the guide member 8 and the guide portion 73.

[0059] Specifically, the guide portion 73 is arranged in a continuous arc shape along the circumference of the rotating lifting mechanism 7, and the height from the lowest point to the highest point of the guide portion 73 is consistent with the maximum stroke of the axial adjustment of the backwashing frame. A limiting portion 74 is also provided at the end of the guide portion 73, and the limiting portion 74 is a limiting protrusion and / or an arc-shaped limiting groove.

[0060] Specifically, the flow channel switching component 2 rotates under the action of external force, can close the raw water flow channel 21 and / or the purified water flow channel 22 (close them at the same time or close any one of them), open the sewage pipe 6, and enter the sewage discharge mode, and can also open the backwash water flow channel 24 at the same time and switch to the backwash sewage discharge mode; can open the raw water flow channel 21 and the purified water flow channel 22, and close the backwash water flow channel 24, and switch to the filtration mode.

[0061] In addition, the flow channel switching assembly 2 and the valve housing cavity 15 can also be axially slidably sealed in connection, and those skilled in the art can make a choice as needed.

[0062] As a specific solution that can be implemented, the flow channel switching component 2 rotates 30-180° under the action of external force, such as 30°, 45°, 60°, 90°, 120°, 180°, and 45° is selected in this embodiment to switch to the backwash mode; the flow channel switching component 2 reversely resets and rotates the same angle (45° is selected in this embodiment) under the action of external force to switch to the filtration mode.

[0063] The utility model realizes that in addition to setting the water inlet, water outlet and filter bottle installation port on the valve head, a sewage outlet is also set, that is, the function of the drainage ball valve originally set at the lower end of the filter bottle is transferred to the valve head, and the traditional backwashing axial adjustment structure is effectively optimized and adjusted. Specifically, during filtering, the flow channel switching component 2 is rotated to realize the connection between the raw water end 11 and the raw water flow channel 21, and the connection between the purified water flow channel 22 and the clean water end 12; when sewage needs to be discharged, the flow channel switching component 2 is rotated, the raw water flow channel 21 and / or the purified water flow channel 22 are closed, and the sewage pipe is opened; when backwashing and sewage discharge are required, the backwashing water flow channel 24 is connected with the raw water flow channel 21, and the impurities accumulated on the valve head are flushed, and then discharged through the sewage pipe 6.

[0064] In this embodiment, the filter bottle assembly end 13 is provided with a quick-install structure assembled with the filter bottle, and the quick-install structure adopts a detachable structure, including a screw connection structure and a clamping structure. This quick-install structure is convenient for users to install, and is also convenient for replacement and maintenance of the filter bottle, or when the valve head is blocked by impurities, it is easy to disassemble and clean.

[0065] Specifically, at least one limiting portion A3 is provided in the valve housing cavity 15, and at least one matching limiting portion B4 is provided in the flow channel switching assembly 2. The limiting portion A3 cooperates with the limiting portion B4 to achieve circumferential limiting or circumferential and axial synchronous limiting of the flow channel switching assembly 2. The circumferential limiting or circumferential and axial synchronous limiting is achieved by simply cooperating with the limiting portions A\B, thereby avoiding axial misalignment when the flow channel switching assembly 2 rotates circumferentially, and being able to conveniently determine the target position of the circumferential rotation.

[0066] More specifically, as a better alternative, a limit portion A3 is provided at the upper and lower parts of the valve housing cavity 15, and two matching limit portions B4 are provided at the flow channel switching component 2. The double axial limit of the flow channel switching component 2 is achieved through the double cooperation of the upper and lower limit portions A3 and the limit portions B4. The double limit is achieved through the simple cooperation of the double limit portions A\B, which avoids axial misalignment of the flow channel switching component 2 during circumferential rotation, and can conveniently determine the target position of the circumferential rotation, further improving the reliability of the valve head flow channel switching.

[0067] In this embodiment, the limiting portion A3 is a groove or a convex block structure, and the limiting portion B4 is a convex block or a groove structure. This type of limiting structure mold is easy to process, easy to demould, and has high reliability of limiting. The flow channel switching component 2 is provided with a rotating drive member, which is a driving element extending axially upward to the bottom of the filter bottle and rotating and sealingly connected along the filter bottle. The flow channel switching component 2 is driven by the rotation of the driving element, or the flow channel switching component 2 is linked with the sewage discharge component, and the sewage discharge component is rotationally sealed and connected to the sewage discharge end 14, and the flow channel switching component 2 is rotated by the rotation of the sewage discharge component. The utility model designs two different rotating drive members, which respectively realize the drive from the top of the filter bottle or the drive from the sewage discharge end. The specific processing can be selected according to the needs. Both can effectively drive the flow channel switching component, better realize the flow channel switching function of the valve head, and have excellent practical performance.

[0068] Specifically, a more preferred solution is: the rotating drive member is a driving element extending upward along the axial direction of the filter bottle, including a driving handle 9 and a driving rod, one end of the driving rod is fixed to the flow channel switching component 2, and the other end is fixed to the driving handle 9; or the driving element includes the driving handle 9 and a driving skeleton, and the two ends of the driving skeleton are directly or indirectly fixed to the flow channel switching component 2 and the driving handle 9 respectively; or the driving element includes a driving handle 7, and the skeleton of the filtering mechanism serves as the driving skeleton, and the two ends of the skeleton of the filtering mechanism are fixed to the driving handle 9 and the flow channel switching component 2 respectively.

[0069] As a parallel implementation, the flow channel switching component 2 is linked with the sewage discharge component, the sewage discharge component includes a sewage discharge seal 5 and a sewage discharge pipe 6, the sewage discharge seal 5 is connected to the sewage discharge end 14 in a rotating and sealing manner, and the sewage discharge pipe 6 is fixedly connected to the sewage discharge seal 5, and the driving element is a manual driving element and / or an electric driving element. The manual, automatic or manual-automatic driving rotation of the flow channel switching component 2 is realized to improve the application scenario of the product. A sealing element is provided between the flow channel switching component 2 and the valve shell cavity 15, and a rotating or sliding sealing connection is realized through the cooperation of the sealing element.

[0070] In this embodiment, a scraping mechanism is also provided outside the laminated filter mechanism. The scraping mechanism can rotate relative to the laminated filter mechanism to scrape the inner wall of the filter bottle and / or the outer wall of the filter laminate. The scraping mechanism is provided with a scraping knob e. The scraping knob e is coaxially arranged with the driving handle 9 and is rotatably sealed with the filter bottle. The end of the scraping knob e is fixed to the scraping mechanism. The scraping knob e is manually driven or electrically driven. The scraping part of the scraping mechanism adopts any one or more of a plastic scraper, a silicone scraper or a brush. A water inlet vortex structure f is also provided in the valve housing 1.

[0071] The beneficial effects of the utility model are as follows: 1) the utility model realizes that in addition to the water inlet, the water outlet and the filter bottle installation port being set on the valve head, a sewage outlet is also set, that is, the function of the drainage ball valve originally set at the lower end of the filter bottle is transferred to the valve head, and the traditional backwashing axial adjustment structure is effectively optimized and adjusted. Specifically, during filtration, the flow channel switching assembly is rotated to realize the connection between the raw water end and the raw water flow channel, and the connection between the purified water flow channel and the clean water end; when sewage needs to be discharged, the flow channel switching assembly is rotated to close the raw water flow channel and / or the purified water flow channel, and the sewage pipe is opened; 2) Circumferential limiting or circumferential and axial synchronous limiting is realized by the cooperation of simple limiting parts A\B, so as to avoid axial misalignment when the flow channel switching assembly rotates circumferentially, and the target position of the circumferential rotation can be conveniently determined; 3) The utility model designs two different rotating drive parts, which respectively realize the drive from the top of the filter bottle or from the sewage discharge end. The specific processing can be selected according to the needs, and both can effectively drive the flow channel switching assembly, better realize the flow channel switching function of the valve head, and have excellent practical performance; 4) Through the cooperation of the guide part and the guide member, the axial adjustment of the backwashing skeleton is driven by external force, which overcomes the failure of the pressure difference principle in the prior art, and simultaneously realizes that the spacing between the laminations can be automatically adjusted and the sewage pipe is opened synchronously during the axial lifting and lowering of the backwashing skeleton. The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

Claims

1. A multifunctional manual-automatic pre-filter mounted on a filter bottle, comprising a valve housing (1), a lamination filtering and backwashing mechanism and a filter bottle, wherein the valve housing (1) is provided with a raw water end (11), a clean water end (12), an upward filter bottle assembly end (13), a downward sewage discharge end (14) and a valve housing cavity (15), wherein the sewage discharge end (14) is provided with a sewage discharge assembly, the filter bottle is fixedly matched with the filter bottle assembly end (13), the lamination filtering and backwashing mechanism is arranged in the filter bottle, the lamination filtering and backwashing mechanism comprises a coaxially arranged lamination filtering mechanism and a backwashing mechanism, the lamination filtering mechanism comprises a filter lamination and a lamination frame, the backwashing mechanism comprises at least a backwashing frame, the cavity between the lamination filtering mechanism and the filter bottle constitutes a raw water cavity, and the interior of the lamination filtering mechanism constitutes a purified water cavity, and the characteristics are as follows: A flow channel switching assembly (2) is provided in the valve housing cavity (15), the flow channel switching assembly (2) being provided with a raw water flow channel (21), a purified water flow channel (22), a sewage flow channel (23) and a backwashing water flow channel (24), the flow channel switching assembly (2) being circumferentially rotatingly sealed or axially slidingly sealed with the valve housing cavity (15), and the flow channel switching assembly (2) circumferentially rotating or axially sliding under the action of an external force to achieve flow channel switching between a filtering mode and a backwashing sewage discharge mode; A rotating lifting mechanism (7) is fixedly provided in the pre-filter, and the rotating lifting mechanism (7) can cooperate with the backwashing frame to realize the lifting and lowering of the backwashing frame relative to the laminated frame during the rotation of the rotating lifting mechanism (7), thereby opening or closing the backwashing filter screen; A sewage discharge switching element is provided at the lower end of the backwashing frame, and the sewage discharge switching element can open or close the sewage discharge end as the backwashing frame rises and falls.

2. The multifunctional manual-automatic pre-filter mounted on the filter bottle according to claim 1 is characterized in that: The filter stack is sleeved on the stack frame and fixed by abutment through the stack adjusting member. With the abutment and release of the stack adjusting member, the filter stack can slide axially relative to the stack frame to be compressed and released.

3. The multifunctional manual and automatic pre-filter mounted on the filter bottle according to claim 2 is characterized in that: At least one guide column is provided at the end of the laminate frame, and the laminate adjustment member is provided with at least one matching guide groove. Through the cooperation between the guide column and the guide groove, the laminate adjustment member moves downward to achieve abutment, and moves upward to release the abutment.

4. The multifunctional manual and automatic pre-filter mounted on the filter bottle according to claim 3 is characterized by: The lamination adjusting member is fixedly arranged at the end of the backwashing frame. When the backwashing frame rises relative to the lamination frame, the lamination adjusting member releases the contact with the filter lamination. When the backwashing frame descends relative to the lamination frame, the lamination adjusting member contacts the filter lamination.

5. The multifunctional manual-automatic pre-filter mounted on the filter bottle according to claim 1 is characterized in that: The backwashing frame comprises a driving section and an adjusting section. The driving section cooperates with a rotating lifting mechanism (7) to realize lifting. The adjusting section is provided with an elastic reset element. Two ends of the elastic reset element are respectively in contact with the backwashing frame and the laminated frame. When the backwashing frame rises relative to the laminated frame, the elastic reset element is compressed. When the backwashing frame falls relative to the laminated frame, the elastic reset element is restored and the backwashing frame is promoted to fall under the action of the restoring force.

6. The multifunctional manual-automatic pre-filter mounted on the filter bottle according to claim 1, 2, 3, 4 or 5, characterized in that: The rotating lifting mechanism (7) is fixedly arranged in the flow channel switching assembly (2) and can rotate synchronously with the flow channel switching assembly (2). The rotating lifting mechanism (7) comprises a fixing portion (71), a rotating shaft portion (72) and a guiding portion (73) with an inclination. The rotating lifting mechanism (7) is fixed to the flow channel switching assembly (2) via the fixing portion (71) and is rotationally connected to the backwashing skeleton via the rotating shaft portion (72). An adaptable guiding member (8) is also provided at the end of the backwashing skeleton. The axial adjustment of the backwashing skeleton is achieved through the cooperation between the guiding member (8) and the guiding portion (73).

7. The multifunctional manual and automatic pre-filter mounted on the filter bottle according to claim 6 is characterized in that: The guide portion (73) is arranged in a continuous arc shape along the circumference of the rotating lifting mechanism (7), and the height from the lowest point to the highest point of the guide portion (73) is consistent with the maximum stroke of the axial adjustment of the backwashing skeleton.

8. The multifunctional manual-automatic pre-filter mounted on the filter bottle according to claim 7 is characterized in that: A limiting portion (74) is also provided at the end of the guide portion (73), and the limiting portion (74) is a limiting protrusion and / or an arc-shaped limiting groove.

9. The multifunctional manual-automatic pre-filter mounted on a filter bottle according to claim 1, characterized in that: The flow channel switching component (2) rotates under the action of an external force, closes the raw water flow channel (21) and / or the purified water flow channel (22), and simultaneously opens the backwash water flow channel (24), switching to a backwash mode; The raw water flow channel (21) and the purified water flow channel (22) are opened, and the backwash water flow channel (24) is closed, switching to the filtering mode.

10. The multifunctional manual and automatic pre-filter mounted on the filter bottle according to claim 9, characterized in that: The flow channel switching component (2) rotates 30-180 degrees under the action of an external force and switches to a backwashing mode; the flow channel switching component (2) rotates reversely and resets to the same angle under the action of an external force and switches to a filtering mode.

11. The multifunctional manual-automatic pre-filter mounted on a filter bottle according to claim 1, 2, 3, 4 or 5, characterized in that: At least one limiting portion A (3) is provided in the valve housing cavity (15), and the flow channel switching assembly (2) is provided with at least one matching limiting portion B (4), and through the cooperation of the limiting portion A (3) and the limiting portion B (4), circumferential limiting or synchronous circumferential and axial limiting of the flow channel switching assembly (2) is achieved.

12. The multifunctional manual-automatic pre-filter mounted on the filter bottle according to claim 11, characterized in that: A limiting portion A (3) is provided at the upper and lower parts of the valve shell cavity (15), respectively, and the flow channel switching component (2) is correspondingly provided with two matching limiting portions B (4). Through the dual cooperation of the upper and lower limiting portions A (3) and the limiting portions B (4), the flow channel switching component (2) is double-limited, and the limiting portion A (3) is a groove or a convex block structure, and the limiting portion B (4) is a convex block or a groove structure.

13. The multifunctional manual-automatic pre-filter mounted on a filter bottle according to claim 1, 2, 3, 4 or 5, characterized in that: The flow channel switching assembly (2) is provided with a rotating drive member, which is a driving element extending upward along the axial direction of the filter bottle to the bottom of the filter bottle and is rotatably sealed. The flow channel switching assembly (2) is driven by the rotation of the driving element, or the flow channel switching assembly (2) is linked to the sewage discharge assembly, the sewage discharge assembly is rotatably sealed to the sewage discharge end (14), and the flow channel switching assembly (2) is rotated by the rotation of the sewage discharge assembly.

14. The multifunctional manual and automatic pre-filter mounted on the filter bottle according to claim 13, characterized in that: The rotary drive member is a drive element extending upward along the axial direction of the filter bottle, comprising a drive handle (9) and a drive rod, one end of the drive rod being fixed to the flow channel switching component (2), and the other end being fixed to the drive handle (9); or the drive element comprises the drive handle (9) and a drive frame, the two ends of the drive frame being respectively directly or indirectly fixed to the flow channel switching component (2) and the drive handle (9); or the drive element comprises the drive handle (9), the frame of the filter mechanism serves as the drive frame, and the two ends of the frame of the filter mechanism are respectively fixed to the drive handle (9) and the flow channel switching component (2).

15. The multifunctional manual-automatic pre-filter mounted on a filter bottle according to claim 13, characterized in that: The flow channel switching component (2) is linked to the sewage discharge component, the sewage discharge component comprises a sewage discharge seal (5) and a sewage discharge pipe (6), the sewage discharge seal (5) is rotatably sealedly connected to the sewage discharge end (14), and the sewage discharge pipe (6) is fixedly connected to the sewage discharge seal (5).

16. The multifunctional manual and automatic pre-filter mounted on the filter bottle according to claim 13, characterized in that: The driving element is a manual driving element and / or an electric driving element.

17. The multifunctional manual-automatic pre-filter mounted on a filter bottle according to claim 1, 2, 3, 4 or 5, characterized in that: A sealing element is provided between the flow channel switching assembly (2) and the valve housing cavity (15), and a rotating sealing or sliding sealing connection is achieved through the cooperation of the sealing element.

18. The multifunctional manual-automatic pre-filter mounted on a filter bottle according to claim 1, 2, 3, 4 or 5, characterized in that: A scraping mechanism is also provided outside the laminated filter mechanism. The scraping mechanism can rotate relative to the laminated filter mechanism to scrape the inner wall of the filter bottle and / or the outer wall of the filter laminate.

19. The multifunctional manual-automatic pre-filter mounted on a filter bottle according to claim 18, characterized in that: The scraping mechanism is provided with a scraping knob (e), which is coaxially arranged with the driving handle (9) and is rotatably sealed and connected with the filter bottle. The end of the scraping knob (e) is fixed to the scraping mechanism, and the scraping knob (e) is manually driven or electrically driven.

20. The multifunctional manual and automatic pre-filter mounted on the filter bottle according to claim 18, characterized in that: The scraping part of the scraping mechanism adopts any one or more of a plastic scraper, a silicone scraper or a brush.

21. The multifunctional manual and automatic pre-filter mounted on the filter bottle according to claim 1, 2, 3, 4 or 5, characterized in that: A water inlet vortex structure (f) is also provided in the valve housing (1).

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