Drain valve and water tank using same

Abstract

The utility model discloses a drain valve and discloses a water tank with the drain valve, and the drain valve is characterized in that the interior of a shell is divided into an upper cavity and a lower cavity which are distributed up and down; the semi-drainage floating core is arranged in the upper cavity in a floating manner; the full-drainage floating core is arranged in the lower cavity in a floating manner; the valve element pipe penetrates through the upper cavity and the lower cavity in a sliding mode, a first clamping position and a second clamping position which are distributed up and down are arranged on the valve element pipe, a linkage assembly is arranged between the first clamping position and the semi-drainage floating element, the semi-drainage floating element can drive the linkage assembly to move to be clamped with or separated from the first clamping position when ascending and descending, and the second clamping position is used for limiting the floating stroke of the full-drainage floating element; the valve element pipe can control opening and closing of the drainage base when moving up and down. The switching piece is movably mounted on the shell; switching among the semi-drainage state, the full-drainage state and the closed state is achieved through the semi-drainage floating core, the full-drainage floating core, the valve element pipe, the linkage assembly and the switching piece, a metal balancing weight is omitted, the touch feeling is lighter when the valve element pipe is pulled, and operation is smoother when the states are switched.

Description

Technical Field

[0001] The utility model relates to a valve body, in particular to a drainage valve and a water tank using the same. Background Art

[0002] Some existing hidden water tank drain valves have dual-speed drain functions of full drain and half drain in order to save water. The half-drain structure uses a water cup counterweight. When the drain valve is pressed to start, the counterweight water cup part is lifted as a load, which requires a lot of force to press, affecting the touch. The switch mechanism of the product requires a metal counterweight to adjust the center of gravity, etc., resulting in a large number of parts and high manufacturing costs. Utility Model Content

[0003] The utility model aims to solve one of the above-mentioned technical problems in the related art at least to a certain extent. To this end, the utility model provides a drain valve.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] The utility model also provides a water tank with the drain valve.

[0006] The drain valve according to the first embodiment of the utility model comprises:

[0007] A shell, wherein the interior of the shell is divided into an upper cavity and a lower cavity distributed vertically;

[0008] A half row of floating cores is placed in the upper chamber in a floating manner;

[0009] A full row of floating cores, floatingly disposed in the lower chamber;

[0010] A valve core tube, the valve core tube is slidably arranged in the upper cavity and the lower cavity, and a first clamping position and a second clamping position are arranged on the valve core tube, and a linkage component is arranged between the first clamping position and the half-row floating core. When the half-row floating core is lifted or lowered, the linkage component can be driven to move to engage or disengage from the first clamping position, and the second clamping position is used to limit the floating stroke of the full-row floating core;

[0011] A drain seat, wherein the valve core tube can control the opening and closing of the drain seat when it moves up and down;

[0012] A switching member is movably mounted on the shell, and the switching member has a first position relative to the shell for allowing the full row of floating cores to rise and a second position for limiting the rise of the full row of floating cores.

[0013] The drain valve according to the embodiment of the utility model has at least the following beneficial effects: the switching between the half-drain state, the full-drain state and the closed state is realized by utilizing the half-drain float core, the full-drain float core, the valve core tube, the linkage assembly and the switching member, the use of the metal counterweight block is eliminated, the touch is lighter when the valve core tube is pulled, and the operation is smoother when switching between the states.

[0014] According to some embodiments of the utility model, a half-row pull rod is further installed on the housing, and the half-row pull rod moves up and down relative to the housing and has a third position and a fourth position;

[0015] When the half-row pull rod moves downward to the fourth position, the half-row pull rod drives the switching member to switch to the first position, and the valve core tube can move axially relative to the half-row pull rod;

[0016] When the half-row pull rod moves up to the third position, the half-row pull rod drives the switching member to switch to the second position, and the half-row pull rod pushes the valve core tube up to the first clamping position and is clamped on the linkage assembly. As the liquid level drops, the half-row pull rod can be reset to the fourth position.

[0017] According to some embodiments of the utility model, a first guide rod is provided on the full-row floating core, a pushing portion is provided at the lower end of the half-row tie rod, the switching member translates on a plane perpendicular to the axial direction of the valve core tube, a first through hole and a second through hole are provided on the switching member, the pushing portion is penetrated through the first through hole, and when the half-row tie rod moves up and down, the pushing portion drives the switching member to translate to switch between the first position and the second position;

[0018] When the switching member is in the first position, the first guide rod can pass through the second through hole to move up and down;

[0019] When the switching member is in the second position, the first guide rod is misaligned with the second through hole, and the upper end of the first guide rod abuts against the switching member.

[0020] According to some embodiments of the utility model, the pushing portion includes an inclined rod portion and a straight rod portion, the inclined rod portion extending obliquely from the lower end of the half-row pull rod, and the straight rod portion extending vertically from one end of the inclined rod portion away from the half-row pull rod.

[0021] According to some embodiments of the utility model, the switching member is provided with a boss on one side facing the full row of floating cores, and an L-shaped clamp is provided on the upper end of the first guide rod. When the switching member is in the second position, the clamp is clamped on the boss.

[0022] According to some embodiments of the utility model, a first water outlet is opened in the lower portion of the shell, and the first water outlet connects the lower cavity to the outside of the shell. The first water outlet extends in a strip-shaped opening shape with a gradually changing width along the circumference of the shell. An adjustment ring is rotatably sleeved on the shell, and the adjustment ring is provided with an adjustment port opposite to the first water outlet. The adjustment ring rotates to change the misalignment area between the adjustment port and the first water outlet.

[0023] According to some embodiments of the utility model, the linkage assembly includes a movable frame and a connecting rod. The movable frame is installed in the upper cavity in an up and down swinging manner. A clamping portion is provided on the movable frame. One end of the connecting rod is connected to the half-row floating core, and the other end of the connecting rod is connected to a side of the movable frame away from the clamping portion. The clamping portion can be clamped in or out of the first clamping position.

[0024] According to some embodiments of the utility model, the connecting rod is provided with a slot arranged around the axial direction, one end of the movable frame is sleeved in the slot, the connecting rod is provided with a screw segment, the connecting rod is parallel to the axial direction of the valve core tube, the screw segment is threadedly connected to the half-row floating core, and a vertically extending second water outlet is opened on the shell, the second water outlet connects the upper cavity to the outside of the shell, and the second water outlet is opposite to the screw segment.

[0025] According to some embodiments of the utility model, the half-row buoyancy core and the full-row buoyancy core are buoy-like structures with a hollow interior, a closed upper end and an open lower end, and the valve core tube is penetrated through the half-row buoyancy core and the full-row buoyancy core.

[0026] The water tank according to the second embodiment of the utility model comprises a box body and a drain valve, a water outlet is arranged at the bottom of the box body, the drain valve is vertically placed in the box body, and the drain seat is connected to the water outlet.

[0027] The water tank according to the embodiment of the utility model has at least the following beneficial effects: when the drain valve is used in the water tank, the use of metal parts is reduced, and the metal parts are prevented from rusting due to long-term immersion in water, thereby ensuring the service life of the drain valve and the stability of the water tank.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0030] Figure 1It is a schematic diagram of the structural breakdown of the drain valve;

[0031] Figure 2 It is the assembly diagram of the drain valve;

[0032] Figure 3 It is a schematic diagram of the drain valve in the closed state when draining water;

[0033] Figure 4 It is a schematic diagram of the drain valve in full drain state;

[0034] Figure 5 It is a schematic diagram of the drain valve in a half-drain state;

[0035] Figure 6 It is a structural schematic diagram of the valve core tube;

[0036] Figure 7 is a schematic diagram of the use state when the switching member is in the first position;

[0037] Figure 8 is a schematic diagram of the use state when the switching member is in the second position;

[0038] Fig. 9 It is a schematic diagram of the coordination of the half-row floating core and linkage assembly;

[0039] Fig.10 It is a schematic diagram of the structure of the water tank.

[0040] Figure numerals: shell 100; upper chamber 101; lower chamber 102; first water outlet 110; adjustment ring 120; adjustment port 121; second water outlet 130; half-row float core 200; full-row float core 300; first guide rod 310; clamp head 311; valve core tube 400; first clamping position 410; second clamping position 420; water sealing plug 430; linkage assembly 500; movable frame 510; clamping portion 511; connecting rod 520; clamping groove 521; screw section 522; drainage seat 600; switching member 700; first through hole 710; second through hole 720; boss 730; half-row pull rod 810; pushing portion 811; inclined rod portion 812; straight rod portion 813; limiting groove 814; full-row pull rod 820; protrusion 821; box body 900; water outlet 910. DETAILED DESCRIPTION

[0041] 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 intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0042] The utility model relates to a drainage valve, comprising a housing 100, a half-row floating core 200, a full-row floating core 300, a valve core tube 400, a drainage seat 600 and a switching member 700.

[0043] like Figure 1 , Figure 2 and Figure 6 As shown, the shell 100 can be set to a cylindrical structure, or it can be set to a box shape, etc., but it is not limited thereto. The shell 100 can be formed in an integral manner, or the shell 100 shown in the figure can be formed by connecting multiple shell parts to facilitate the assembly of other components. The interior of the shell 100 is divided into an upper chamber 101 and a lower chamber 102. The upper chamber 101 and the lower chamber 102 are distributed up and down. The half-row buoyancy core 200 is installed in the upper chamber 101. When the upper chamber 101 is filled with water, the half-row buoyancy core 200 can float upward in the upper chamber 101, and the half-row buoyancy core 200 descends as the liquid level in the upper chamber 101 decreases. The full-row buoyancy core 300 is installed in the lower chamber 102. When the lower chamber 102 is filled with water, the full-row buoyancy core 300 can float upward in the lower chamber 102, and the full-row buoyancy core 300 descends as the liquid level in the lower chamber 102 decreases. The shapes of the half-row buoyancy core 200 and the full-row buoyancy core 300 are not limited, and can be set to a shape corresponding to the inner wall of the upper chamber 101 and the lower chamber 102. In order to ensure the stability of the half-row buoyancy core 200 and the full-row buoyancy core 300 when floating and rising in the upper chamber 101 and the lower chamber 102, guide ribs can be set on the inner walls of the upper chamber 101 and the lower chamber 102, and guide grooves that are adapted to slide with the guide ribs can be set on the half-row buoyancy core 200 and the full-row buoyancy core 300; or other guide structures can be set, but not limited to this. The valve core tube 400 can be set to a hollow tube structure with two ends open. The valve core tube 400 vertically penetrates the shell 100, and the valve core tube 400 is slidably penetrated in the upper chamber 101 and the lower chamber 102. The valve core tube 400 can move up and down relative to the upper chamber 101 and the lower chamber 102 along the axial direction. In this embodiment, the half-row floating core 200 and the full-row floating core 300 are buoy-shaped structures with a hollow interior, a closed upper end, and an open lower end. The valve core tube 400 is provided through the half-row floating core 200 and the full-row floating core 300. A first clamping position 410 and a second clamping position 420 are provided on the valve core tube 400. The first clamping position 410 and the second clamping position 420 are distributed up and down along the axial direction of the valve core tube 400. The shapes of the first clamping position 410 and the second clamping position 420 are not limited, and can be, but are not limited to, Figure 6As shown, the first clamping position 410 protrudes in the form of a triangular inclined platform on the side wall of the valve core tube 400. The second clamping position 420 protrudes in the form of a circular ring around the central axis of the valve core tube 400 on the side wall of the valve core tube 400. The first clamping position 410 is located in the upper chamber 101, and the second clamping position 420 is located in the lower chamber 102. A linkage assembly 500 is provided between the first clamping position 410 and the half-row floating core 200. The linkage assembly 500 can move in the upper chamber 101. When the half-row floating core 200 is lifted and floated in the upper chamber 101, it can drive the linkage assembly 500 to engage or disengage from the first clamping position 410. The second clamping position 420 is used to limit the floating stroke of the full-row floating core 300. When the full-row floating core 300 floats upward in the lower chamber 102, the full-row floating core 300 can abut against the second clamping position 420, thereby limiting the floating of the full-row floating core 300. The drain seat 600 is installed at the lower end of the housing 100, and the lower end of the valve core tube 400 can move relative to the drain seat 600. A water sealing plug 430 can be installed at the lower end of the drain seat 600. When the valve core tube 400 moves downward, the drain seat 600 is blocked by the water sealing plug 430; when the valve core tube 400 moves upward, the water sealing plug 430 leaves the drain seat 600, and the drain seat 600 is opened for drainage. The switching assembly is movably installed on the housing 100. The switching assembly has a first position and a second position when moving on the housing 100. When the switching assembly is in the first position, the full-row floating core 300 can rise in the lower chamber 102. When the switching assembly is in the second position, the switching assembly can limit the full-row floating core 300 from rising in the lower chamber 102. In order to facilitate the operation of the valve core tube 400, a full-row pull rod 820 can be connected to the upper end of the valve core tube 400, and the valve core tube 400 is pulled upward by the full-row pull rod 820.

[0044] The drain valve is applied to the water tank for illustration. Fig.10 As shown, the water tank includes a box body 900, and a water outlet 910 is provided at the bottom of the box body 900. The drain valve is vertically placed in the box body 900. The drain seat 600 is connected to the water outlet 910. The liquid in the box body 900 can flow in and out of the upper chamber 101 and the lower chamber 102. When working, the drain valve has a closed state, a half-drain state and a full-drain state.

[0045] In the closed state, Figure 3 and Fig.10As shown, the lower end of the valve core tube 400 is blocked on the drain seat 600, and the box 900 is filled with water. Under the action of water pressure and the gravity of the valve core tube 400, the valve core tube 400 is pressed tightly in the drain seat 600, and the blocking of the drain seat 600 is equivalent to blocking the water outlet 910 of the box 900. At this time, the full-row floating core 300 stays in the lower part of the lower chamber 102 under the restriction of the second clamping position 420. The half-row floating core 200 can float to the upper part of the upper chamber 101. At this time, the linkage assembly 500 and the first clamping position 410 are not linked, and the half-row floating core 200 does not generate an upward force on the valve core tube 400.

[0046] In the full row state, if Figure 4 As shown, the valve core tube 400 is pulled upward, and the bottom end of the valve core tube 400 leaves the drain seat 600. The drain seat 600 is opened, and the water in the box 900 is discharged to the outside of the box 900 through the drain seat 600 and the water outlet 910 for use. At this time, the switching member 700 is in the first position, and the second clamping position 420 moves upward with the valve core tube 400. The full-displacement floating core 300 floats upward and abuts against the second clamping position 420. Through the buoyancy of the full-displacement floating core 300 and the cooperation of the second clamping position 420, the valve core tube 400 is kept in the upward position, so that the lower end of the valve core tube 400 is kept away from the drain seat 600. As the water in the box 900 continues to be discharged from the water outlet 910, the liquid level in the box 900 gradually decreases. When the liquid level in the box 900 drops to the height of the lower chamber 102, the full-drain float 300 gradually moves downward as the liquid level of the lower chamber 102 drops, and the valve core tube 400 also drops accordingly. Until the valve core tube 400 drops to the point where its lower end abuts against the drain seat 600, the drain seat 600 is re-blocked and reset to the closed state. In the full-drain state, the water in the box 900 is basically drained. Then water is re-injected into the box 900, waiting for the next drainage operation. Among them, in the full-drain state, the linkage assembly 500 can continue to remain in the position in the closed state, and the half-drain float 200 and the valve core tube 400 are not linked.

[0047] In the half row state, Figure 5As shown, the switching member 700 is switched from the first position to the second position. Then the valve core tube 400 is pulled upward. The switching member 700 in the second position limits the full-row floating core 300 from moving upward, and the full-row floating core 300 stays at the lower part of the lower chamber 102. The half-row floating core 200 floats up, and the valve core tube 400 is pulled upward until the linkage assembly 500 is clamped on the first clamping position 410. The liquid level in the box 900 is higher than the floating limit position of the half-row floating core 200. At this time, the linkage assembly 500 remains clamped on the first clamping position 410, that is, the valve core tube 400 is kept at a position where its lower end is separated from the drain seat 600, and the water in the box 900 is discharged outward. As the liquid level drops, the half-row floating core 200 drops until the liquid level drops to the point where the half-row floating core 200 falls to the bottom of the upper chamber 101, and at this time, the half-row floating core 200 drives the linkage assembly 500 to disengage from the first clamping position 410. The valve core tube 400 loses the restriction of the linkage assembly 500 and moves downward according to its own gravity to reset to the closed state. The water in the box 900 is now discharged to the lowest downward position of the half-row floating core 200, that is, the box 900 only discharges a part of the water to achieve the half-row function. The box 900 is refilled with water and waits for the next drainage operation.

[0048] The drain valve uses a half-drain float core 200, a full-drain float core 300, a valve core tube 400, a linkage assembly 500 and a switching member 700 to switch between a half-drain state, a full-drain state and a closed state, and eliminates the use of a metal counterweight. The valve core tube 400 feels lighter when pulled, and the operation is smoother when switching between states. When the drain valve is used in a water tank, the use of metal parts is reduced, and the metal parts are prevented from rusting due to long-term immersion in water, thereby ensuring the service life of the drain valve and the stability of the water tank.

[0049] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, a half-row tie rod 810 is also installed on the housing 100. The half-row tie rod 810 moves vertically up and down relative to the housing 100. The half-row tie rod 810 has a third position and a fourth position when moving up and down. Figure 2As shown, a limiting groove 814 is provided in the vertical direction on the half-row tie rod 810, and a protrusion 821 is provided on the valve core tube 400 or the full-row tie rod 820 connected to the valve core tube 400. The protrusion 821 is slidably connected in the limiting groove 814. In the closed state and the full-row state, the half-row tie rod 810 moves down and remains at the fourth position. In the fourth position, the half-row tie rod 810 drives the switching component to switch and remain in the first position. At this time, the valve core tube 400 can move axially independently of the half-row tie rod 810. The half-row tie rod 810 is pulled upward and moved from the fourth position to the third position. The half-row tie rod 810 pulls the valve core tube 400 upward by abutting the lower end of the limiting groove 814 with the protrusion 821. At the same time, the half-row tie rod 810 switches the switching member 700 from the first position to the second position, limiting the full-row floating core 300 from moving upward. When in the third position, the valve core tube 400 moves up to the first clamping position 410 and is clamped on the linkage assembly 500, so that the drain valve enters the half-drain state. As the liquid level drops, the drain valve is reset from the half-drain state to the closed state, and when the valve core tube 400 moves down and resets, the stopper groove 814 can be pushed downward by the protrusion 821, so that the half-drain pull rod 810 is reset from the third position to the fourth position.

[0050] The switching member 700 can be driven by an external component. In order to facilitate operation and simplify the structure, the switching member 700 and the half-row pull rod 810 are configured to be linked. Figure 7 As shown, a first guide rod 310 is provided on the full-row buoyancy core 300. The first guide rod 310 can be extended vertically upward from the top of the full-row buoyancy core 300. A pushing portion 811 is provided at the lower end of the half-row pull rod 810. The switching member 700 can be provided with a plate structure, and the switching member 700 translates in a spatial plane perpendicular to the axial direction of the valve core tube 400. A first through hole 710 and a second through hole 720 are provided on the switching member 700, and the first through hole 710 and the second through hole 720 pass through the switching member 700 along the axial direction of the valve core tube 400. The pushing portion 811 is penetrated by the first through hole 710. When the half-row pull rod 810 moves up and down, the switching member 700 is driven to translate between the first position and the second position by the pushing portion 811. Among them, as Figure 7 As shown, when the half-row pull rod 810 moves down to the fourth position, the switching member 700 is in the first position, the first guide rod 310 and the second through hole 720 are opposite to each other, and the first guide rod 310 can move up with the full-row floating core 300. When moving up, the first guide rod 310 passes through the second through hole 720 from bottom to top, and the second through hole 720 avoids the moving path of the first guide rod 310. Figure 8As shown, when the half-row pull rod 810 moves up to the third position, the push portion 811 pushes the switching member 700 to the second position. At this time, the second through hole 720 and the first guide rod 310 are offset from each other in the vertical direction. The upper end of the first guide rod 310 abuts against the bottom surface of the switching member 700, thereby limiting the upward movement of the full-row floating core 300.

[0051] A guide rail structure may be provided between the pushing portion 811 and the first through hole 710 for pushing. Figure 7 and Figure 8 As shown, the pushing portion 811 includes an oblique rod portion 812 and a straight rod portion 813. The oblique rod portion 812 extends obliquely downward from the lower end of the half-row pull rod 810. The straight rod portion 813 extends vertically downward from one end of the oblique rod portion 812 away from the half-row pull rod 810. When the half-row pull rod 810 moves down to the fourth position, the upper end of the oblique rod portion 812 is located in the first through hole 710. In the process of the half-row pull rod 810 moving upward to the third position, the inclined surface of the oblique rod portion 812 abuts against the side wall of the first through hole 710, and the vertical upward movement of the half-row pull rod 810 is converted into a translational movement of the switching member 700 through the oblique rod portion 812, and the switching member 700 gradually moves from the first position to the second position. When the half-row pull rod 810 moves up to the point where the straight rod portion 813 is in the first through hole 710, the switching member 700 moves to the second position, and the switching member 700 is positioned by the straight rod portion 813.

[0052] Further, such as Figure 8 As shown, a boss 730 is provided on the side of the switching member 700 facing the full row of floating cores 300. In this embodiment, the full row of floating cores 300 are located on the lower side of the switching member 700, and the boss 730 protrudes downward from the bottom surface of the switching member 700. An L-shaped clamp 311 is provided at the upper end of the first guide rod 310. When the switching member 700 is in the second position, the clamp 311 is clamped on the boss 730, thereby ensuring that the switching member 700 effectively limits the full row of floating cores 300 in the second position.

[0053] In some embodiments of the present invention, Figure 1 and Figure 2As shown, a first water outlet 110 is provided at the lower part of the shell 100. The first water outlet 110 connects the lower cavity 102 to the outside of the shell 100. The first water outlet 110 extends in a strip-shaped opening with a gradually changing width along the circumference of the shell 100. In the direction shown in the figure, the opening width of the first water outlet 110 gradually increases from left to right. An adjusting ring 120 is sleeved on the shell 100. The adjusting ring 120 rotates on the shell 100. An adjusting port 121 is provided on the adjusting ring 120. The adjusting port 121 can be rectangular and arranged along the circumference of the adjusting ring 120. The adjusting port 121 and the first water outlet 110 are opposite to each other, and water can flow inside and outside the lower cavity 102 through the adjusting port 121 and the first water outlet 110. When the adjusting ring 120 rotates, the adjusting port 121 and the first water outlet 110 are misaligned in the circumferential direction of the housing 100, that is, the adjusting ring 120 can be blocked on the first water outlet 110. By rotating the adjusting ring 120, the misaligned area of ​​the adjusting port 121 and the first water outlet 110 can be changed, thereby changing the speed at which water is discharged from the lower chamber 102 through the first water outlet 110, thereby controlling the speed at which the full-row floating core 300 moves downward.

[0054] In some specific embodiments of the present invention, Fig. 9 As shown, the linkage assembly 500 includes a movable frame 510 and a connecting rod 520. The movable frame 510 can be rotatably installed in the upper chamber 101 via a rotating shaft. The movable frame 510 swings up and down around the rotating shaft. A clamping portion 511 is provided on the movable frame 510, one end of the connecting rod 520 is connected to the half-row floating core 200, and the other end of the connecting rod 520 is connected to the side of the movable frame 510 away from the clamping portion 511. Figure 5 As shown, when the half-row buoyancy core 200 moves upward, the connecting rod 520 is driven to move upward, and the connecting rod 520 drives the movable frame 510 to swing upward, and at this time, the clamping portion 511 is flipped downward to be clamped on the first clamping position 410. When the half-row buoyancy core 200 moves downward, the connecting rod 520 is driven to move downward, and the connecting rod 520 drives the movable frame 510 to swing downward, and at this time, the clamping portion 511 is flipped upward to be separated from the first clamping position 410. Both ends of the connecting rod 520 can be connected to the half-row buoyancy core 200 and the movable frame 510 in a hinged manner.

[0055] Further, such as Fig. 9As shown, the connecting rod 520 is provided with a slot 521 arranged around the axial direction. One end of the movable frame 510 is ring-shaped and sleeved in the slot 521. The connecting rod 520 is provided with a screw section 522, and the setting direction of the connecting rod 520 is parallel to the axial direction of the valve core tube 400. The screw section 522 is connected to the half-row floating core 200 by a thread. The upper end of the connecting rod 520 can abut against the top of the shell to limit the upward movement. The shell 100 is provided with a second water outlet 130 extending vertically. The second water outlet 130 connects the upper chamber 101 to the outside of the shell 100. The second water outlet 130 is opposite to the screw section 522. When the movable frame 510 is turned upside down, the connecting rod 520 is driven to move vertically through the slot 521. By rotating the connecting rod 520, the height of the half-row floating core 200 can be adjusted by rotating on the screw section 522. The displacement of the half-row buoyancy core 200 is different at different heights. The higher the half-row buoyancy core 200 is, the less the displacement is. Thus, the displacement in the half-row state is controlled according to usage requirements.

[0056] In the description of this specification, the description of reference terms such as "some specific embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0057] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A drain valve, characterized in that: include: A housing (100), wherein the interior of the housing (100) is divided into an upper chamber (101) and a lower chamber (102) which are arranged vertically; A half row of floating cores (200) is placed in the upper chamber (101) in a floating manner; A full row of floating cores (300) are placed in the lower chamber (102) in a floating manner; a valve core tube (400), the valve core tube (400) being slidably disposed in the upper cavity (101) and the lower cavity (102), the valve core tube (400) being provided with a first clamping position (410) and a second clamping position (420) which are distributed up and down, a linkage assembly (500) being provided between the first clamping position (410) and the half-row floating core (200), the half-row floating core (200) being able to drive the linkage assembly (500) to move so as to clamp or disengage from the first clamping position (410) when the half-row floating core (200) is raised or lowered, and the second clamping position (420) is used to limit the floating stroke of the full-row floating core (300); A drain seat (600), wherein the valve core tube (400) can control the opening and closing of the drain seat (600) when the valve core tube (400) moves up and down; A switching member (700) is movably mounted on the housing (100); the switching member (700) has a first position relative to the housing (100) that allows the full row of floating cores (300) to rise, and a second position that limits the rise of the full row of floating cores (300).

2. The drain valve according to claim 1, characterized in that: A half-row pull rod (810) is also installed on the housing (100), and the half-row pull rod (810) moves up and down relative to the housing (100) and has a third position and a fourth position; When the half-row pull rod (810) moves downward to the fourth position, the half-row pull rod (810) drives the switching member (700) to switch to the first position, and the valve core tube (400) can move axially relative to the half-row pull rod (810); When the half-row pull rod (810) moves up to the third position, the half-row pull rod (810) drives the switching member (700) to switch to the second position, and the half-row pull rod (810) pushes the valve core tube (400) to move up to the first locking position (410) to be locked on the linkage assembly (500), and as the liquid level drops, the half-row pull rod (810) can be reset to the fourth position.

3. The drain valve according to claim 2, characterized in that: The full-row floating core (300) is provided with a first guide rod (310), the lower end of the half-row tie rod (810) is provided with a pushing portion (811), the switching member (700) translates on a plane perpendicular to the axial direction of the valve core tube (400), the switching member (700) is provided with a first through hole (710) and a second through hole (720), the pushing portion (811) is penetrated through the first through hole (710), and when the half-row tie rod (810) moves up and down, the pushing portion (811) drives the switching member (700) to translate so as to switch between the first position and the second position; When the switching member (700) is in the first position, the first guide rod (310) can pass through the second through hole (720) and move up and down; When the switching member (700) is in the second position, the first guide rod (310) and the second through hole (720) are misaligned, and the upper end of the first guide rod (310) abuts against the switching member (700).

4. The drain valve according to claim 3, characterized in that: The pushing portion (811) comprises an inclined rod portion (812) and a straight rod portion (813), wherein the inclined rod portion (812) extends obliquely from the lower end of the half-row pull rod (810), and the straight rod portion (813) extends vertically from one end of the inclined rod portion (812) away from the half-row pull rod (810).

5. The drain valve according to claim 3, characterized in that: A boss (730) is provided on one side of the switching member (700) facing the full-row floating core (300), and an L-shaped clamp (311) is provided on the upper end of the first guide rod (310); when the switching member (700) is in the second position, the clamp (311) is clamped on the boss (730).

6. The drain valve according to claim 1, characterized in that: A first water outlet (110) is provided at the lower part of the shell (100), the first water outlet (110) connecting the lower chamber (102) to the outside of the shell (100), the first water outlet (110) extending in a strip-shaped opening shape with a gradually changing width along the circumference of the shell (100), an adjusting ring (120) is rotatably sleeved on the shell (100), the adjusting ring (120) is provided with an adjusting port (121) opposite to the first water outlet (110), and the adjusting ring (120) is rotated to change the misalignment area between the adjusting port (121) and the first water outlet (110).

7. The drain valve according to claim 1, characterized in that: The linkage assembly (500) comprises a movable frame (510) and a connecting rod (520); the movable frame (510) is installed in the upper chamber (101) in an up-and-down swinging manner; a clamping portion (511) is provided on the movable frame (510); one end of the connecting rod (520) is connected to the half-row floating core (200); the other end of the connecting rod (520) is connected to a side of the movable frame (510) away from the clamping portion (511); and the clamping portion (511) can be clamped to or disengaged from the first clamping position (410).

8. The drain valve according to claim 7, characterized in that: The connecting rod (520) is provided with a slot (521) arranged around the axial direction, one end of the movable frame (510) is sleeved in the slot (521), the connecting rod (520) is provided with a screw segment (522), the connecting rod (520) is parallel to the axial direction of the valve core tube (400), the screw segment (522) is threadedly connected to the half-row floating core (200), and the housing (100) is provided with a second water outlet (130) extending vertically, the second water outlet (130) connects the upper chamber (101) to the outside of the housing (100), and the second water outlet (130) and the screw segment (522) are opposite in position.

9. The drain valve according to claim 1, characterized in that: The half-row floating core (200) and the full-row floating core (300) are buoy-shaped structures with a hollow interior, a closed upper end and an open lower end, and the valve core tube (400) is inserted through the half-row floating core (200) and the full-row floating core (300).

10. A water tank, characterized in that: It comprises a box body (900) and the drain valve according to any one of claims 1 to 9, wherein a water outlet (910) is provided at the bottom of the box body (900), the drain valve is vertically placed in the box body (900), and the drain seat (600) is connected to the water outlet (910).

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