阅读说明：本技术 一种带限流双层过滤构件的节水型低位水箱 (Water-saving low-level water tank with flow-limiting double-layer filtering component ) 是由 李建富 黄洽明 黄甲欣 黄丽敏 郑志强 吴茂炎 黄锐冰 李坤 尹虹 于 2020-05-18 设计创作，主要内容包括：本发明公开了一种带限流双层过滤构件的节水型低位水箱,包括水箱本体,所述水箱本体的内部贯穿有排水管和供水管,所述排水管位于供水管的一侧,所述供水管的外表面活动安装有闭水阀和进水阀；本发明通过第一卡块、第二卡块和第一过滤栓柱以及第二过滤栓柱的配合使用,提升了第一过滤网和第二过滤网维护的便捷性和降低成本,解决了现有方案中进水阀拆洗维修不便的问题；通过设置的第一过滤网和第二过滤网的配合使用,有效提高了水的洁净度,解决了现有方案中对水的过滤效果不佳的问题；通过设置的第一定型环和第二定型环以及密封垫的配合使用,可以有效提高防虹吸垫的密封性和稳定性,解决了现有的防虹吸垫容易变形进而导致紧密性差的问题。(The invention discloses a water-saving low-level water tank with a flow-limiting double-layer filtering component, which comprises a water tank body, wherein a drain pipe and a water supply pipe penetrate through the water tank body, the drain pipe is positioned at one side of the water supply pipe, and the outer surface of the water supply pipe is movably provided with a water closing valve and a water inlet valve; according to the invention, the first clamping block, the second clamping block, the first filtering bolt and the second filtering bolt are matched for use, so that the convenience of maintenance of the first filtering net and the second filtering net is improved, the cost is reduced, and the problem that the water inlet valve is inconvenient to disassemble, wash and maintain in the existing scheme is solved; the first filter screen and the second filter screen are matched for use, so that the cleanliness of water is effectively improved, and the problem of poor water filtering effect in the existing scheme is solved; the first design ring and the second design ring that set up and the sealed cooperation that fills up are used, can effectively improve the leakproofness and the stability of anti-siphon pad, have solved current anti-siphon pad and have warp easily and then lead to the poor problem of compactness.)

1. The water-saving low-level water tank with the flow-limiting double-layer filtering component is characterized by comprising a water tank body (1), a drain pipe (2) and a water supply pipe (3) penetrate through the inside of the water tank body (1), the drain pipe (2) is positioned on one side of the water supply pipe (3), a water closing valve (4) and a water inlet valve (6) are movably mounted on the outer surface of the water supply pipe (3), the water closing valve (4) is positioned below the water inlet valve (6), an inner tank (5) is arranged inside the water tank body (1), a floating ball (8) is arranged inside the water tank body (1), a floating arm (7) is movably connected between the floating ball (8) and the water inlet valve (6), a flushing valve base (9) is fixedly mounted at a position, close to the bottom end, on the inner surface of the inner tank (5), and a ball plug (10) is movably mounted inside the, a starting rod (13) is arranged in the inner box (5), a steel rope (12) is movably connected to the outer surface of the starting rod (13), a guide column (11) is movably connected to the outer surface of the steel rope (12), and a water injection pipe (14) is movably connected between the starting rod (13) and the water supply pipe (3);

the upper end of the water inlet valve (6) is movably provided with a top cover (16), a first clamping block (17) and a second clamping block (18) are fixedly arranged in the top cover (16), the first clamping block (17) is located on one side of the second clamping block (18), a first filter screen (23) and a second filter screen (24) are movably arranged between the first clamping block (17) and the second clamping block (18), the first filter screen (23) is located above the second filter screen (24), an anti-siphon pad (15) penetrates through the inside of the water inlet valve (6), a shaping block (31) is fixedly arranged in the anti-siphon pad (15), and a sealing pad (32) is fixedly arranged on the outer surface of the anti-siphon pad (15).

2. A water-saving low level cistern with a double layer flow-limiting filter according to claim 1, wherein a first filter stud (19) and a second filter stud (20) are fixedly installed between the first clamping block (17) and the second clamping block (18), the first filter stud (19) is located at one side of the second filter stud (20), a first clamping block (21) is fixedly installed at one side of the first filter stud (19) far away from the first clamping block (17), a second clamping block (22) is fixedly installed at one side of the second filter stud (20) far away from the second clamping block (18), the first filter screen (23) and the second filter screen (24) are respectively fixedly connected with the first filter stud (19) and the second filter stud (20) through the first clamping block (21) and the second clamping block (22), a water stop valve (25) is movably installed on the outer surface of the first filtering screen (6), and a cross column (26) is fixedly arranged on the inner surface of the water stop valve (25), and the cross column (26) penetrates through the inside of the water inlet valve (6).

3. A water-saving low level cistern with current-limiting double-deck filter member as claimed in claim 1, wherein a plurality of connecting blocks (28) are fixedly mounted inside the first block (17), a plurality of connecting blocks (28) are arranged and distributed at equal intervals, an expansion spring (29) and a fixed block (30) are arranged inside the connecting blocks (28), the expansion spring (29) is located at one side of the fixed block (30), the fixed block (30) is welded and fixed to the inner surface of the connecting blocks (28), one side of the expansion spring (29) away from the fixed block (30) is fixedly connected with an elastic expansion column (27), and the elastic expansion column (27) is elastically connected with the connecting blocks (28) through the expansion spring (29).

4. A water-saving low level cistern having a flow-limiting double layer filter element as claimed in claim 1, wherein the anti-siphon pad (15) has a first sizing ring (311) and a second sizing ring (312) fixedly mounted therein, the first sizing ring (311) is located above the second sizing ring (312), the anti-siphon pad (15), the first sizing ring (311) and the second sizing ring (312) are all circular, the diameter of the anti-siphon pad (15) is greater than the diameters of the first sizing ring (311) and the second sizing ring (312), the first filter (23) has first filtering holes therein, and the second filter (24) has second filtering holes therein.

5. A water-saving low-level cistern having a double deck filter element with flow restriction according to claim 2, wherein the first engaging portion (17) is engaged with the first filter stud (19), the second engaging portion (18) is engaged with the second filter stud (20), a first engaging groove is formed on a side of the first filter stud (19) adjacent to the first engaging portion (17), and a second engaging groove is formed on a side of the second filter stud (20) adjacent to the second engaging portion (18).

6. A water-saving low level cistern having a flow-limiting double-deck filter member as claimed in claim 2, wherein the outer surface of the cross post (26) is provided with external threads and the inner surface of the inlet valve (6) is provided with internal threads, and the cross post (26) is threadedly connected to the inlet valve (6) through the external threads and the internal threads.

7. A water-saving low-level cistern having a double-deck filter element with flow restriction according to claim 2, wherein the first and second catches (17, 18) are symmetrically arranged and the first and second filter studs (19, 20) are symmetrically arranged and distributed.

8. A water-saving low-level cistern having a flow-restricting double-deck filter structure as claimed in any one of claims 1 to 4, wherein the steps of operating the water-saving low-level cistern are:

the method comprises the following steps: embedding a first sizing ring (311) and a second sizing ring (312) in the anti-siphon pad (15), fixing a sealing gasket (32) on the outer surface of the anti-siphon pad (15), clamping and fixing the anti-siphon pad (15) on the water inlet valve (6), and movably installing a top cover (16) on the anti-siphon pad (15);

step two: the second filter screen (24) and the first filter screen (23) are sequentially clamped and installed on the first filter stud (19) and the second filter stud (20) through the first clamping block (21) and the second clamping block (22), the first filter stud (19) and the second filter stud (20) are pressed downwards to the position between the first fixture block (17) and the second fixture block (18), the elastic telescopic columns (27) move in the direction away from the first filter stud (19) and the second filter stud (20), and thrust is applied to the telescopic springs (29) to enable the telescopic springs (29) to contract;

step three: until the first filtering bolt (19) and the second filtering bolt (20) are completely clamped between the first clamping block (17) and the second clamping block (18), the plurality of contracted telescopic springs (29) apply thrust to the plurality of elastic telescopic columns (27) in the direction close to the first filtering bolt (19) and the second filtering bolt (20), so that the plurality of elastic telescopic columns (27) move in the direction close to the first filtering bolt (19) and the second filtering bolt (20) and are clamped and fixed with the first clamping groove and the second clamping groove;

step four: adjusting the water closing valve (4) and the water inlet valve (6) to enable the water supply pipe (3) to be kept in an open state, enabling water flow to enter the inner box (5) after being filtered by the anti-siphon pad (15) and the first filter screen (23) and the second filter screen (24), and flushing the water flow into the closestool through the water discharge pipe (2); the first filtering bolt (19) and the second filtering bolt (20) are pulled upwards to the position between the first clamping block (17) and the second clamping block (18), the plurality of elastic telescopic columns (27) move towards the direction far away from the first filtering bolt (19) and the second filtering bolt (20), thrust is applied to the plurality of telescopic springs (29) to enable the telescopic springs (29) to contract, the plurality of elastic telescopic columns (27) are separated from the first clamping groove and the second clamping groove, the first filtering bolt (19) and the second filtering bolt (20) are pulled upwards to be completely separated from the water inlet valve (6), the plurality of contracted telescopic springs (29) apply thrust to the plurality of elastic telescopic columns (27) towards the direction close to the first filtering bolt (19) and the second filtering bolt (20), and the plurality of elastic telescopic columns (27) move towards the direction close to the first filtering bolt (19) and the second filtering bolt (20), and returns to the original state, and the second filter screen (24) and the first filter screen (23) are separated from the first filter plug (19) and the second filter plug (20) through the first clamping block (21) and the second clamping block (22) and are cleaned.

Technical Field

The invention relates to the technical field of low-level water tanks, in particular to a water-saving low-level water tank with a flow-limiting double-layer filtering component.

Background

The basic principle of a toilet bowl is to convert the potential energy of water into the kinetic energy of water by using the gravity of water, so as to entrain excrement and dirt into a sewer pipe, and the toilet bowl comprises the following main parts: the water inlet pipe, the water outlet pipe, the water seepage pipe, the water plugs (water inlet and water outlet), the floating ball, the water discharge knob and the lever, the water replenishing mechanism, the water tank, the urinal and the bent pipe communicated with the water tank can be divided into three types of common ball valve type flush toilets, automatic control type water-saving flush toilets and pneumatic flush toilets.

Patent publication No. CN104032809B discloses large-traffic water conservation low level water tank, rinse-system and control system, rinse-system includes the box, installs the inlet tube through the sealing washer under the box, is provided with the check valve on the inlet tube, and the control lever of check valve links to each other with the floater, and the box bottom surface is equipped with out the water disk seat, is equipped with out the water case above the water valve seat, and it is equipped with the guide bar to go out water case top, even has the connection rope on the guide bar, and control system comprises steering wheel, power, single chip microcomputer system, big towards button and little towards button, steering wheel, power and single chip microcomputer system establish ties, big towards the button with little towards the parallelly connected back of button with single chip. The invention has compact and ingenious structure, convenient and labor-saving operation, good sealing effect, adjustable use flow and water saving. The defects of the current low-level water tank are as follows: the water inlet valve is inconvenient to install and disassemble, so that the water inlet valve is inconvenient to disassemble, wash and maintain; water is not filtered, so that impurities in the water block the device to influence the use of the device; and the anti-siphon pad is easy to deform after long-term use, so that the sealing property of the water inlet valve is influenced, and the opening and closing of water are out of control, so that the waste of water resources is caused.

Disclosure of Invention

The invention aims to provide a water-saving low-level water tank with a flow-limiting double-layer filtering component;

one technical problem solved by the first aspect of the present disclosure is: through the first fixture block that sets up, the cooperation of second fixture block and first filtration embolus and second filtration embolus is used, conveniently install and dismantle first filter screen and second filter screen, control through a plurality of elastic telescopic post cooperation expanding spring and remove about in connecting the clamp splice, can make a plurality of elastic telescopic post and first draw-in groove and second draw-in groove carry out the block fixed, conveniently with first filter screen and second filter screen and water intaking valve separation, clear up first filter screen and second filter screen, the dismouting operating efficiency of first filtration embolus and second filtration embolus has effectively been improved, the convenience of first filter screen and second filter screen maintenance has been promoted and the cost of maintaining has been reduced, the inconvenient problem of unpicking and washing maintenance in the current water intaking valve has been solved.

One technical problem solved by the second aspect of the present disclosure is: the cooperation through the first filter screen that sets up and second filter screen is used, constitute by the filtration pore of equidimension not on first filter screen and the second filter screen, can carry out thick first fine filtration of back with water, filterable effect has effectively been improved, first filter screen and second filter screen all weld on first clamp splice and second clamp splice, the second filter screen filters the isolation to the great impurity of aquatic granule earlier, first filter screen carries out secondary filter to thick filterable water, carry out the fine filtration with the less impurity of aquatic granule, the cleanliness factor of water has effectively been improved, the not good problem of filter effect to water in the current scheme has been solved.

One technical problem solved by the third aspect of the present disclosure is: through the cooperation use of the first type ring that sets up and second design ring and sealed pad, can effectively improve the leakproofness and the stability of anti-siphon pad, through inlaying first type ring and second design ring in the inside of anti-siphon pad, can make anti-siphon pad non-deformable, and then can improve the availability factor and the compactness of anti-siphon pad, can improve the leakproofness of anti-siphon pad through sealed pad, and then can make opening and closing that anti-siphon pad can the effective control water, it warp easily and then leads to compactness poor to have solved current anti-siphon pad, make opening and closing of water out of control and then lead to the waste of water resource.

The purpose of the invention can be realized by the following technical scheme:

a water-saving low-level water tank with a flow-limiting double-layer filtering component comprises a water tank body, a drain pipe and a water supply pipe penetrate through the inside of the water tank body, the water discharge pipe is positioned at one side of the water supply pipe, the outer surface of the water supply pipe is movably provided with a water closing valve and a water inlet valve, the water-closing valve is positioned below the water inlet valve, the inner tank is arranged inside the water tank body, the floating ball is arranged inside the water tank body, a floating arm is movably connected between the floating ball and the water inlet valve, a flushing valve base is fixedly arranged at the position of the inner surface of the inner box close to the bottom end, a ball plug is movably arranged in the flushing valve base, a starting rod is arranged in the inner box, the outer surface of the starting rod is movably connected with a steel rope, the outer surface of the steel rope is movably connected with a guide post, and a water injection pipe is movably connected between the starting rod and a water supply pipe;

the upper end of the water inlet valve is movably provided with a top cover, a first clamping block and a second clamping block are fixedly arranged inside the top cover, the first clamping block is located on one side of the second clamping block, a first filter screen and a second filter screen are movably arranged between the first clamping block and the second clamping block, the first filter screen is located above the second filter screen, an anti-siphon pad penetrates through the inside of the water inlet valve, a shaping block is fixedly arranged inside the anti-siphon pad, and a sealing pad is fixedly arranged on the outer surface of the anti-siphon pad.

Furthermore, a first filtering stud and a second filtering stud are fixedly installed between the first clamping block and the second clamping block, the first filtering stud is located on one side of the second filtering stud, a first clamping block is fixedly installed on one side, away from the first clamping block, of the first filtering stud, a second clamping block is fixedly installed on one side, away from the second clamping block, of the second filtering stud, the first filtering net and the second filtering net are fixedly connected with the first filtering stud and the second filtering stud through the first clamping block and the second clamping block respectively, a water stop valve is movably installed on the outer surface of the water inlet valve, a cross post is fixedly installed on the inner surface of the water stop valve, and the cross post penetrates through the inside of the water inlet valve.

Further, the inside fixed mounting of first fixture block has a plurality of to connect the clamp splice, a plurality of it is equidistant range distribution to connect the clamp splice, the inside of connecting the clamp splice is provided with expanding spring and fixed block, expanding spring is located one side of fixed block, the fixed block is fixed with the internal surface welding who connects the clamp splice, one side fixedly connected with elastic expansion post of fixed block is kept away from to expanding spring, elastic expansion post passes through expanding spring and is connected clamp splice elastic connection.

Further, the inside fixed mounting of anti-siphon pad has first type ring and second to decide the ring, first type ring is located the top of second to decide the ring, anti-siphon pad, first type ring and second decide the ring and are circular, the diameter of anti-siphon pad is greater than the diameter of first type ring and second decide the ring, the inside of first filter screen is provided with first filtration hole, the inside of second filter screen is provided with the second and filters the hole.

Furthermore, the first fixture block is connected with the first filtering stud in a clamping manner, the second fixture block is connected with the second filtering stud in a clamping manner, a first clamping groove is formed in one side, close to the first fixture block, of the first filtering stud, and a second clamping groove is formed in one side, close to the second fixture block, of the second filtering stud.

Furthermore, the outer surface of the cross column is provided with external threads, the inner surface of the water inlet valve is provided with internal threads, and the cross column is in threaded connection with the water inlet valve through the external threads and the internal threads.

Furthermore, the first fixture block and the second fixture block are symmetrically arranged and distributed, and the first filtering bolt and the second filtering bolt are symmetrically arranged and distributed.

Further, the working steps of the water-saving low-level water tank are as follows:

the method comprises the following steps: embedding the first shaping ring and the second shaping ring in the anti-siphon pad, fixing the sealing gasket on the outer surface of the anti-siphon pad, fixing the anti-siphon pad on the water inlet valve in a clamping manner, and movably installing the top cover on the anti-siphon pad;

step two: the second filter screen and the first filter screen are sequentially clamped and mounted on the first filter stud and the second filter stud through the first clamping block and the second clamping block, the first filter stud and the second filter stud are pressed down to the position between the first clamping block and the second clamping block, the plurality of elastic telescopic studs move in the direction far away from the first filter stud and the second filter stud, and thrust is applied to the plurality of telescopic springs to enable the telescopic springs to contract;

step three: until the first filtering bolt and the second filtering bolt are completely clamped between the first clamping block and the second clamping block, the plurality of telescopic springs apply thrust to the plurality of elastic telescopic columns in the direction close to the first filtering bolt and the second filtering bolt, so that the plurality of elastic telescopic columns move in the direction close to the first filtering bolt and the second filtering bolt and are clamped and fixed with the first clamping groove and the second clamping groove;

step four: adjusting a water closing valve and a water inlet valve to enable a water supply pipe to be kept in an open state, filtering water flow through an anti-siphon cushion and a first filter screen and a second filter screen, then enabling the water flow to enter an inner box, and flushing the water flow into the closestool through a drain pipe; the first filtering bolt and the second filtering bolt are pulled upwards to the position between the first clamping block and the second clamping block, the plurality of elastic telescopic bolts move towards the direction far away from the first filtering bolt and the second filtering bolt, thrust is applied to the plurality of telescopic springs to enable the telescopic springs to contract, so that the plurality of elastic telescopic columns are separated from the first clamping groove and the second clamping groove, the first filtering bolt column and the second filtering bolt column are pulled upwards to be completely separated from the water inlet valve, the plurality of telescopic springs which contract apply thrust to the plurality of elastic telescopic columns in the direction close to the first filtering bolt column and the second filtering bolt column, so that the plurality of elastic telescopic columns move towards the direction close to the first filtering plug column and the second filtering plug column, and returning to the original state, separating the second filter screen and the first filter screen from the first filter plug and the second filter plug through the first clamping block and the second clamping block, and cleaning.

One advantageous effect brought by the first aspect of the present disclosure is:

through the first fixture block that sets up, the cooperation of second fixture block and first filtration embolus and second filtration embolus is used, conveniently install and dismantle first filter screen and second filter screen, control through a plurality of elastic telescopic column cooperation expanding spring and remove about in connecting the clamp splice, can make a plurality of elastic telescopic column carry out the block with first draw-in groove and second draw-in groove and fix, conveniently with first filter screen and second filter screen and water intaking valve separation, clear up first filter screen and second filter screen, the dismouting operating efficiency of first filtration embolus and second filtration embolus has effectively been improved, the convenience of first filter screen and second filter screen maintenance has been promoted and the cost of maintaining has been reduced.

One advantageous effect brought by the second aspect of the present disclosure is:

the cooperation through the first filter screen that sets up and second filter screen is used, constitute by the filtration pore of equidimension not on first filter screen and the second filter screen, can carry out earlier thick fine filtration of back with water, filterable effect has effectively been improved, first filter screen and second filter screen all weld on first clamp splice and second clamp splice, the second filter screen filters the isolation to the more big impurity of aquatic granule earlier, first filter screen carries out secondary filter to thick filterable water, carry out the fine filtration with the less impurity of aquatic granule, the cleanliness factor of water has effectively been improved.

One advantageous effect brought by the third aspect of the present disclosure is:

the first type ring and the second type ring that set up and the sealed cooperation of filling up are used, can effectively improve the leakproofness and the stability of anti-siphon pad, through inlaying first type ring and second type ring in the inside of anti-siphon pad, can make anti-siphon pad non-deformable, and then can improve the availability factor and the compactness of anti-siphon pad, can improve the leakproofness of anti-siphon pad through sealed the pad, and then can make opening and closing that anti-siphon pad can effective control water.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a perspective view of a water-saving low level cistern having a flow-limiting double layer filter element according to the present invention;

FIG. 2 is a view showing a structure of a connection of a feed valve according to the present invention;

FIG. 3 is a connecting structure diagram of a first clamping block according to the present invention;

FIG. 4 is a block diagram of an anti-siphon pad according to the invention;

FIG. 5 is an internal structural view of an anti-siphon pad according to the present invention.

In the figure: 1. a water tank body; 2. a drain pipe; 3. a water supply pipe; 4. closing the water valve; 5. an inner box; 6. a water inlet valve; 7. a float arm; 8. a floating ball; 9. a flush valve base; 10. a ball plug; 11. a guide post; 12. a steel cord; 13. a start lever; 14. a water injection pipe; 15. an anti-siphon pad; 16. a top cover; 17. a first clamping block; 18. a second fixture block; 19. a first filter plug; 20. a second filter plug; 21. a first clamping block; 22. a second clamp block; 23. a first filter screen; 24. a second filter screen; 25. a water stop valve; 26. a cross post; 27. an elastic telescopic column; 28. connecting the clamping blocks; 29. a tension spring; 30. a fixed block; 31. a shaping block; 32. a gasket; 311. a first swage ring; 312. and a second sizing ring.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-5, a water-saving low-level tank with a flow-limiting double-layer filtering member comprises a tank body 1, a drain pipe 2 and a water supply pipe 3 penetrate through the tank body 1, the drain pipe 2 is positioned on one side of the water supply pipe 3, a water closing valve 4 and a water inlet valve 6 are movably mounted on the outer surface of the water supply pipe 3, the water closing valve 4 is positioned below the water inlet valve 6, an inner tank 5 is arranged inside the tank body 1, a floating ball 8 is arranged inside the tank body 1, a floating arm 7 is movably connected between the floating ball 8 and the water inlet valve 6, a flush valve base 9 is fixedly mounted on the inner surface of the inner tank 5 near the bottom end, a ball plug 10 is movably mounted inside the flush valve base 9, a starting rod 13 is arranged inside the inner tank 5, a steel cable 12 is movably connected on the outer surface of the starting rod 13, a guide column 11 is movably connected on the, a water injection pipe 14 is movably connected between the starting rod 13 and the water supply pipe 3;

the upper end movable mounting of water intaking valve 6 has top cap 16, the inside fixed mounting of top cap 16 has first fixture block 17 and second fixture block 18, and first fixture block 17 is located one side of second fixture block 18, movable mounting has first filter screen 23 and second filter screen 24 between first fixture block 17 and the second fixture block 18, first filter screen 23 is located the top of second filter screen 24, the inside of water intaking valve 6 runs through has anti-siphon pad 15, the inside fixed mounting of anti-siphon pad 15 has the shaping piece 31, the fixed surface of anti-siphon pad 15 installs sealed pad 32.

A first filtering bolt 19 and a second filtering bolt 20 are fixedly installed between the first fixture block 17 and the second fixture block 18, the first filtering bolt 19 is located on one side of the second filtering bolt 20, a first clamping block 21 is fixedly installed on one side, far away from the first fixture block 17, of the first filtering bolt 19, a second clamping block 22 is fixedly installed on one side, far away from the second fixture block 18, of the second filtering bolt 20, the first filter screen 23 and the second filter screen 24 are respectively and fixedly connected with the first filtering bolt 19 and the second filtering bolt 20 through the first clamping block 21 and the second clamping block 22, a water stop valve 25 is movably installed on the outer surface of the water inlet valve 6, a cross column 26 is fixedly installed on the inner surface of the water stop valve 25, and the cross column 26 penetrates through the inside of the water inlet valve 6.

The inside fixed mounting of first fixture block 17 has a plurality of to connect clamp splice 28, a plurality of connect clamp splice 28 and be equidistant range distribution, the inside of connecting clamp splice 28 is provided with expanding spring 29 and fixed block 30, expanding spring 29 is located one side of fixed block 30, fixed block 30 is fixed with the internal surface welding who is connected clamp splice 28, expanding spring 29 keeps away from one side fixedly connected with elastic expansion post 27 of fixed block 30, elastic expansion post 27 passes through expanding spring 29 and is connected clamp splice 28 elastic connection.

Anti-siphon pad 15's inside fixed mounting has first type ring 311 and second to decide ring 312, first type ring 311 is located the top that the ring 312 was decided to the second, anti-siphon pad 15, first type ring 311 and second decide ring 312 and are circular, anti-siphon pad 15's diameter is greater than the diameter that first type ring 311 and second decided ring 312, the inside of first filter screen 23 is provided with first filtration hole, the inside of second filter screen 24 is provided with the filtration hole of second.

The first fixture block 17 is connected with the first filtering stud 19 in a clamping manner, the second fixture block 18 is connected with the second filtering stud 20 in a clamping manner, a first clamping groove is formed in one side, close to the first fixture block 17, of the first filtering stud 19, and a second clamping groove is formed in one side, close to the second fixture block 18, of the second filtering stud 20.

The outer surface of the cross column 26 is provided with external threads, the inner surface of the water inlet valve 6 is provided with internal threads, and the cross column 26 is in threaded connection with the water inlet valve 6 through the external threads and the internal threads.

The first block 17 and the second block 18 are symmetrically arranged and distributed, and the first filtering bolt 19 and the second filtering bolt 20 are symmetrically arranged and distributed.

The working steps of the water-saving low-level water tank are as follows:

the method comprises the following steps: embedding the first sizing ring 311 and the second sizing ring 312 in the anti-siphon pad 15, fixing the sealing gasket 32 on the outer surface of the anti-siphon pad 15, clamping and fixing the anti-siphon pad 15 on the water inlet valve 6, and movably installing the top cover 16 on the anti-siphon pad 15;

step two: a second filter screen 24 and a first filter screen 23 are sequentially clamped and mounted on a first filter stud 19 and a second filter stud 20 through a first clamping block 21 and a second clamping block 22, the first filter stud 19 and the second filter stud 20 are pressed down to the position between a first fixture block 17 and a second fixture block 18, a plurality of elastic telescopic studs 27 move in the direction far away from the first filter stud 19 and the second filter stud 20, and thrust is applied to a plurality of telescopic springs 29 to enable the telescopic springs 29 to contract;

step three: until the first filtering bolt 19 and the second filtering bolt 20 are completely clamped between the first clamping block 17 and the second clamping block 18, the plurality of contracted telescopic springs 29 apply thrust to the plurality of elastic telescopic columns 27 in the direction close to the first filtering bolt 19 and the second filtering bolt 20, so that the plurality of elastic telescopic columns 27 move in the direction close to the first filtering bolt 19 and the second filtering bolt 20 and are clamped and fixed with the first clamping groove and the second clamping groove;

step four: adjusting the water closing valve 4 and the water inlet valve 6 to enable the water supply pipe 3 to be kept in an open state, filtering water flow through the anti-siphon pad 15 and the first filter screen 23 and the second filter screen 24, then enabling the water flow to enter the inner box 5, and flushing the water flow into the closestool through the water discharge pipe 2; the first filtering bolt 19 and the second filtering bolt 20 are pulled upwards to the position between the first clamping block 17 and the second clamping block 18, the elastic telescopic columns 27 move towards the direction far away from the first filtering bolt 19 and the second filtering bolt 20, thrust is applied to the telescopic springs 29 to enable the telescopic springs 29 to contract, the elastic telescopic columns 27 are enabled to be separated from the first clamping groove and the second clamping groove, the first filtering bolt 19 and the second filtering bolt 20 are pulled upwards to be completely separated from the water inlet valve 6, the telescopic springs 29 which contract apply thrust to the elastic telescopic columns 27 towards the first filtering bolt 19 and the second filtering bolt 20, the elastic telescopic columns 27 move towards the direction close to the first filtering bolt 19 and the second filtering bolt 20 and recover to the original state, the second filtering net 24 and the first filtering net 23 are separated from the first filtering bolt 19 and the second filtering bolt 20 through the first clamping block 21 and the second clamping block 22, and the second filtering bolt 19 and the second filtering bolt 20 are separated from the second filtering bolt 20 And (5) cleaning.

The working principle of the invention is as follows: through the matched use of the first fixture block 17, the second fixture block 18, the first filtering studs 19 and the second filtering studs 20, the first filtering net 23 and the second filtering net 24 can be conveniently installed and disassembled, and the plurality of elastic telescopic studs 27 are matched with the telescopic springs 29 to move left and right in the connecting clamp block 28, so that the plurality of elastic telescopic studs 27 can be clamped and fixed with the first clamping groove and the second clamping groove, the first filtering net 23 and the second filtering net 24 can be conveniently separated from the water inlet valve 6, the first filtering net 23 and the second filtering net 24 can be cleaned, the disassembling and assembling operation efficiency of the first filtering studs 19 and the second filtering studs 20 is effectively improved, the maintenance convenience of the first filtering net 23 and the second filtering net 24 is improved, the maintenance cost is reduced, and the problem that the water inlet valve 6 is inconvenient to disassemble, clean and maintain in the existing scheme is solved;

through the matching use of the first filter screen 23 and the second filter screen 24, the first filter screen 23 and the second filter screen 24 are composed of filter holes with different sizes, a first filter hole is formed in the first filter screen 23, a second filter hole is formed in the second filter screen 24, the aperture of the second filter hole is larger than that of the first filter hole, water can be filtered firstly coarsely and then finely, the filtering effect is effectively improved, the first filter screen 23 and the second filter screen 24 are both welded on the first clamping block 21 and the second clamping block 22, the second filter screen 24 filters and isolates impurities with larger particles in water firstly, the first filter screen 23 carries out secondary filtration on coarsely filtered water, fine filtration is carried out on impurities with smaller particles in water, the cleanliness of water is effectively improved, and the problem of poor water filtering effect in the existing scheme is solved;

through the cooperation use of the first type ring 311 that sets up and the second design ring 312 and sealed pad 32, can effectively improve the leakproofness and the stability of anti-siphon pad 15, through inlaying first type ring 311 and the second design ring 312 in the inside of anti-siphon pad 15, can make anti-siphon pad 15 non-deformable, and then can improve anti-siphon pad 15's availability factor and compactness, can improve anti-siphon pad 15's leakproofness through sealed pad 32, and then can make opening and closing of anti-siphon pad 15 can the effective control water, it is poor to have solved current anti-siphon pad 15 easy deformation and then lead to compactness, make opening and closing of water out of control and then lead to the waste of water resource.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.