CN115680077A - Drainage device and bathroom equipment - Google Patents

Abstract

The invention relates to a drainage device and bathroom equipment. The flushing mechanism is provided with a driving cavity with variable space size and a driven cavity with variable space size; when the space of drive chamber expands, the drive chamber makes the driven chamber receive the compression and the space diminishes through the transmission, and the space variation of driven chamber is greater than the space variation of drive chamber. The first control valve has a through-flow state for opening the liquid injection flow passage of the drive chamber and a shut-off state for shutting off the liquid injection flow passage of the drive chamber. The overflow valve is connected between the driving cavity and the driven cavity and used for isolating the driven cavity from the driving cavity in a through-flow state and communicating the driven cavity with the driving cavity in a cut-off state. The second control valve is used for controlling the on-off of the liquid supplementing flow channel of the driven cavity according to the liquid level height in the driven cavity. After the driven cavity completes the supplement of the fluid, the drainage device can perform the next drainage operation, and the circulation operation of the drainage device is realized.

Description

Drainage and Sanitary Equipment

technical field

The invention relates to the technical field of sanitary equipment, in particular to a drainage device and sanitary equipment.

Background technique

As a kind of bathroom equipment, the development trend of smart toilet is the same as that of mobile phones. The cover is getting thinner and thinner, almost flat, so as to improve the aesthetics and save indoor space. The ceramic water tank of the traditional toilet needs to meet the height requirement, so that there is enough potential energy and water volume for the toilet to flush cleanly, but the height of the ceramic water tank will cause the smart toilet to occupy a large indoor space as a whole, making this method gradually eliminated.

The non-ceramic water tank toilet structure on the market usually directly uses tap water pressure to flush, which requires high water pressure. However, due to unstable water pressure in old residential areas, when the water pressure is insufficient, the output flow rate of the water source is slow, and it is impossible to guarantee washing and rinsing.

Another non-ceramic water tank toilet ensures the water volume by setting a booster pump, but this method causes the toilet to have a complicated structure, is expensive and is fragile.

Contents of the invention

Based on this, it is necessary to provide a drainage device and sanitary equipment for the problem that the water pressure of the sanitary equipment cannot guarantee the flow rate due to the limitation of the water source, and the addition of a booster pump will cause a complicated structure.

A drainage device, comprising:

The flushing mechanism has a drive chamber with a variable size and a driven chamber with a variable size; when the space of the drive chamber expands, the drive chamber shrinks the space of the driven chamber through transmission, and the driven chamber shrinks. The spatial variation of the cavity is greater than the spatial variation of the driving cavity;

The first control valve has a flow-through state for opening the liquid injection channel of the drive chamber and a flow-off state for closing the liquid injection channel of the drive chamber;

An overflow valve, connected between the driving chamber and the driven chamber; used to isolate the driven chamber from the driving chamber in the flow-through state and to isolate the driven chamber in the cut-off state communicating with the drive cavity; and

The second control valve is used to control the opening and closing of the supplementary liquid channel of the driven chamber according to the liquid level in the driven chamber.

In the above drainage device, since the spatial variation of the driven chamber is greater than that of the driving chamber when the driving chamber expands, the amount of fluid discharged from the driven chamber is greater than the amount of fluid entering the driving chamber, so that it can be drained in a short time Increase the amount of discharged water and improve the flushing or sewage effect. After the drainage of the driven chamber is completed, the regulating component controls the shutoff of the flow channel between the driving chamber and the fluid supply source, and controls the fluid to replenish the driven chamber. When the driven chamber expands, it reacts against the driving chamber, and the driving chamber The discharged fluid is guided and replenished to the driven chamber by the regulating component. After the driven chamber completes the supplement of fluid, the drainage device can perform the next drainage operation, realizing the circulation operation of the drainage device. In addition, the drainage device makes full use of the water volume amplification form to allow a larger volume of fluid to clean the body of the bathroom equipment per unit time. Under the same volume, a greater flow rate has a better flushing effect on the body. This solves the problem that the main body of the bathroom equipment is not rinsed clean under low water pressure, or uses less water to meet the flushing effect, which is in line with today's concept of energy saving and environmental protection. At the same time, since there is no need to add an additional booster pump, the structure of the drainage device is complicated, the increase in cost or the decrease in stability are avoided. In addition, the fluid replenishment of the driving chamber can be controlled through the control of the first control valve, and the overflow valve can adjust the communication or isolation between the driven chamber and the driving chamber according to the state of the first control valve, thus simplifying the control of the drainage device .

In one of the embodiments, the overflow valve is provided with a liquid inlet, a liquid outlet and a discharge port, and the first control valve is connected between the liquid inlet and the fluid supply source; the liquid outlet connected to the driving chamber, and the discharge port is connected to the driven chamber; in the flow-through state, the liquid outlet is isolated from the discharge port; in the cut-off state, the The liquid outlet is in communication with the discharge port.

In one of the embodiments, the overflow valve includes a main valve body and a spool assembly movably arranged in the main valve body; the main valve body is provided with a main channel, and the main channel communicates with the liquid inlet and the liquid outlet; in the flow-through state, the spool assembly is used to isolate the discharge port from the main channel; in the cut-off state, the spool assembly releases the The isolation between the discharge port and the main channel.

In one of the embodiments, the spool assembly has a first state of isolating the discharge port from the main passage and a second state of communicating the discharge port with the main passage; the overflow The flow valve also includes a time-delay assembly, the time-delay assembly has a variable-sized adjustment cavity; the adjustment cavity communicates with the main channel; wherein, when the fluid injection expands the adjustment cavity to a predetermined degree, the The delay component acts on the spool component to make the spool component change from the first state to the second state; or, when the regulating chamber expands to a predetermined degree when the fluid is injected, the delay The timing component acts on the first control valve to convert the first control valve from a flow-through state to a flow-block state.

In one of the embodiments, the flushing mechanism has a compression transmission member for abutting against the inner wall of the driven chamber; when the driven chamber shrinks until its inner wall abuts against the compression transmission member, The compression transmission member acts on the main-side switching trigger member of the first control valve to switch the first control valve from the flow-through state to the flow-block state.

In one of the embodiments, the first control valve is provided with a main-side output chamber and a main-side inner guide port communicating with the main-side output chamber; the first control valve is also provided with a The main side diaphragm of the side inner guide port; the first control valve is provided with a main side input chamber on the side of the main side diaphragm facing away from the main side inner guide port, and the main side input chamber is used for connected to a fluid supply source; the first control valve is also provided with a main-side balance pipe with one end used to communicate with the main-side output chamber; the main-side switching trigger is used to control the other end of the main-side balance pipe and On-off of the main side input cavity.

In one of the embodiments, the flushing mechanism includes a secondary casing and a piston assembly, and the piston assembly is movably passed through the secondary casing to cooperate to form the driven chamber; the compression transmission member Installed on the secondary side casing, the piston assembly abuts against the compression transmission member when it penetrates into the secondary side casing.

In one of the embodiments, the flushing mechanism further includes a liquid level detection member pierced through the driven chamber, and the liquid level detection member floats up and down depending on the liquid level in the driven chamber; When the liquid level detection element rises to a predetermined height, it acts on the secondary switching trigger element of the second control valve, so that the second control valve is switched from the on state to the off state.

In one of the embodiments, the first control valve and the overflow valve are set separately.

A sanitary equipment, comprising: a drainage device and a body connected to the drainage device; the body is provided with a liquid pool, and the bottom of the liquid pool is provided with a sewage outlet, and the fluid discharged from the driven chamber is output to the body of the body The liquid pool and/or the sewage outlet are used to flush the inner wall of the liquid pool and/or discharge the dirt from the sewage outlet.

Description of drawings

Fig. 1 is the structural representation of the bathroom equipment of an embodiment of the present invention;

Fig. 2 is a structural schematic diagram of the drainage device in Fig. 1, wherein the first control valve is in a flow-through state;

Fig. 3 is an enlarged view at A of the drainage device shown in Fig. 2;

Fig. 4 is an enlarged view at B of the drainage device shown in Fig. 2;

Fig. 5 is an enlarged view at C of the drainage device shown in Fig. 2;

Fig. 6 is a schematic structural view of the drainage device shown in Fig. 2 in another state, wherein the first control valve is in a cut-off state;

Fig. 7 is a schematic perspective view of the overflow valve in Fig. 6;

Fig. 8 is a partial schematic diagram of the relief valve shown in Fig. 7;

Fig. 9 is an enlarged view at D of the relief valve shown in Fig. 8;

Fig. 10 is an enlarged view of E of the relief valve shown in Fig. 8 .

Reference signs:

100. Sanitary equipment; 30. Body; 31. Liquid pool; 311. Sewage outlet; 32. Scrubbing waterway; 321. Liquid outlet hole; 33. Jetting waterway; 34. Siphon; 35. Storage chamber; 70. Drainage device; 40 , flushing mechanism; 401, drive cavity; 402, driven cavity; 41, main side housing; 411, main side port; 412, main side flexible corrugated cylinder; 42, secondary side shell; 422, secondary side flexible bellows tube; 43, piston assembly; 431, driving plate; 432, transition rod; 433, driven plate; 434, pressure relief channel; 435, pressure relief valve core; 436, pressure relief push block; 44, compression transmission part; 45, liquid level detection part; 46, reset drive part; 50, first control valve; 51, main side switching trigger part; 52, main side output cavity; ;54, main side spacer; 55, main side input cavity; 56, main side guide hole; 57, main side balance pipe; 20, overflow valve; 21, main valve body; 211, external joint; 211a, liquid inlet 211b, flow bayonet; 212, main valve housing; 212a, liquid outlet; 212b, main channel; 212c, discharge bayonet; 212d, discharge cavity; 212e, discharge port; 212f, convex pipe; 212g, control port; 22, spool assembly; 221, spool body; 221a, flow guide frame; 221b, discharge guide frame; 222, the first leak-proof pad; 223, the second leak-proof pad; When assembly; 231, housing; 231a, first sub-shell; 231b, second sub-shell; 231c, throttle seat; 231d, transition hole; 232, piston piece; 232a, first piston block; 232b, second piston Block; 233, transmission part; 234, regulating cavity; 235, delay flow channel; 236, sealing flexible part; 237, pipe body; 238, first elastic part; 239, second elastic part; 24, throttling assembly; 241, throttling core body; 243, throttling hole; 244, throttling leak-proof pad; 242, throttling cover; 80, second control valve; 81, secondary side switching trigger piece; 82, secondary side output cavity; 83 , Secondary inner guide port; 84, Secondary spacer; 85, Secondary input cavity; 86, Secondary balance tube; 900, Fluid supply source.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or Elements must have certain orientations, be constructed and operate in certain orientations, and therefore should not be construed as limitations on the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise specified limit. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may be that the first and second features are in direct contact, or that the first and second features pass through an intermediary contact indirectly. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or it just means that the first feature is higher in level than the second feature. "Below", "beneath" and "under" the first feature may mean that the first feature is directly below or obliquely below the second feature, or it just means that the level of the first feature is smaller than that of the second feature.

It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions are for the purpose of illustration only and are not intended to represent the only embodiment.

The technical solutions provided by the embodiments of the present invention are described below with reference to the accompanying drawings.

The present invention provides a sanitary device 100 .

Please refer to FIG. 1 , the sanitary equipment 100 includes a drainage device 70 and a body 30 connected to the drainage device 70 , the body 30 is provided with a liquid pool 31 , and the bottom of the liquid pool 31 is provided with a sewage outlet 311 . In one embodiment, the sanitary equipment 100 is a toilet, and it can be understood that the sanitary equipment 100 may also be other equipment that needs to be flushed and cleaned, such as a wash basin and a bathtub. The main body 30 may have a washing channel 32 to guide the fluid in the drainage device 70 to the upper side of the liquid pool 31 so that the fluid can evenly wash the inner wall of the liquid pool 31 from top to bottom. The main body 30 may also have a water jet 33 and a siphon 34 connected to the sewage outlet 311. The water jet 33 guides the fluid in the drainage device 70 to the liquid pool 31 and discharges the dirt in the liquid pool 31 through the sewage outlet 311 and the siphon 34. .

More specifically, the washing water channel 32 discharges the fluid to the upper inner wall of the liquid pool 31 through the liquid outlet hole 321 . The main body 30 is provided with a receiving chamber 35 for receiving the flushing mechanism 40 .

The present invention provides a drainage device 70 .

As shown in FIGS. 2 to 6 , the drainage device 70 includes a flushing mechanism 40 , a first control valve 50 connected to the flushing mechanism 40 , an overflow valve 20 connected to the flushing mechanism 40 and a second valve connected to the flushing mechanism 40 . control valve 80 .

The flushing mechanism 40 has a drive cavity 401 with a variable size and a driven cavity 402 with a variable size. When the space of the driving chamber 401 expands, the driving chamber 401 shrinks the space of the driven chamber 402 through transmission, and the spatial variation of the driven chamber 402 is greater than the spatial variation of the driving chamber 401 . The first control valve 50 has a flow-through state for opening the liquid injection channel of the drive chamber 401 and a flow-off state for closing the liquid injection channel of the drive chamber 401 . The overflow valve 20 is connected between the driving chamber 401 and the driven chamber 402, and is used for isolating the driven chamber 402 from the driving chamber 401 in the flow-through state and communicating the driven chamber 402 with the driving chamber 401 in the cut-off state . The second control valve 80 is used to control the opening and closing of the replenishment fluid channel of the driven chamber 402 according to the liquid level in the driven chamber 402 .

Please refer to FIG. 2 and FIG. 6 . Specifically, when the driving chamber 401 expands due to the external driving force, the driven chamber 402 can be compressed and the fluid stored in the driven chamber 402 can be discharged by transmitting the external driving force. When the driving chamber 401 is expanded by the driving external force, the variation of its expansion space is smaller than the variation of the compression space of the driven chamber 402 . The first control valve 50 and the overflow valve 20 are used to control the opening and closing of the injection channel between the driving chamber 401 and the fluid supply source 900 . The second control valve 80 is used to regulate the fluid replenishment of the driven chamber 402 . After finishing or interrupting the compression of the driven chamber 402 , the overflow valve 20 is used to guide and supplement the fluid in the driving chamber 401 to the driven chamber 402 . Specifically, the liquid injection channel is disposed between the fluid supply source 900 , the first control valve 50 , the overflow valve 20 and the driving chamber 401 .

During the working process of the drainage device 70 , fluid can be pre-injected into the driven chamber 402 to fully expand the internal space of the driven chamber 402 , and at the same time, the driving chamber 401 is emptied in advance so that the driving chamber 401 is in a contracted state. Under the control of the first control valve 50 , the fluid supply source 900 that generates the driving external force injects fluid into the contracted drive chamber 401 , the space of the drive chamber 401 expands due to the fluid filling. When the driving chamber 401 expands, the external driving force is transmitted to the driven chamber 402 , so that the driven chamber 402 is compressed, and the stored fluid in the driven chamber 402 is discharged to the body 30 of the sanitary equipment 100 . Since the spatial variation of the driven chamber 402 is larger than that of the driving chamber 401 when the driving chamber 401 expands, the amount of fluid discharged from the driven chamber 402 is greater than the amount of fluid entering the driving chamber 401, so that Increase the amount of discharged water inside to improve the flushing or sewage effect. After the draining of the driven chamber 402 ends, the first control valve 50 switches from the flow-through state to the cut-off state, so that the flow channel between the drive chamber 401 and the fluid supply source 900 is shut off, and the overflow valve 20 makes the drive chamber 401 communicates with the driven cavity 402 . The second control valve 80 supplements the driven chamber 402 with fluid, and when the driven chamber 402 expands, it reacts against the driving chamber 401, and the fluid discharged from the driving chamber 401 is guided and replenished to the driven chamber 402 through the overflow valve 20, so that the driven chamber 402 quick refill fluid. After the driven chamber 402 completes the supplement of fluid, the drainage device 70 can perform the next drainage operation. The drainage operation makes the first control valve 50 switch from the cut-off state to the flow-through state, and the fluid supply source 900 supplies the drive chamber 401 again. Fluid is injected to realize the circulation operation of the drainage device 70 .

In some embodiments, the fluid supply source 900 is the output of a municipal tap water pipeline, and the fluid injected into the driving chamber 401 or the driven chamber 402 is tap water. In some other embodiments, the fluid supply source 900 may also be the output of the municipal tap water pipeline after passing through the booster pump, or the pumping output of the external water storage by the external pump body of the sanitary equipment 100 .

The flush mechanism 40 has various structural forms.

In some embodiments, the flushing mechanism 40 includes a primary housing 41 , a secondary housing 42 and a piston assembly 43 . The piston assembly 43 is movably mounted on the main side housing 41 , so that the main side housing 41 cooperates with the piston assembly 43 to form a driving cavity 401 . The piston assembly 43 movably passes through the secondary housing 42 , so that the secondary housing 42 cooperates with the piston assembly 43 to form a driven cavity 402 .

In the embodiment shown in FIG. 2 , the piston assembly 43 includes a driving plate 431 , a transition rod 432 and a driven plate 433 connected in sequence. The active plate 431 is movably accommodated in the main side housing 41 , and cooperates with the main side housing 41 to form the driving cavity 401 . The driven plate 433 is movably accommodated in the secondary housing 42 , and cooperates with the secondary housing 42 to form the driven cavity 402 . Specifically, the opening of the primary side case 41 and the secondary side case 42 are disposed opposite to each other. When the drive cavity 401 expands, the active plate 431 withdraws from the main side housing 41 and moves, and the active plate 431 acts on the driven plate 433 through the transition rod 432, so that the driven plate 433 moves in the direction of the secondary side housing 42, and the driven plate 431 The space of cavity 402 is thus shrunk. More specifically, the primary side case 41 is integrally provided with the secondary side case 42 . The main-side housing 41 is provided with a main-side port 411 communicating with the driving chamber 401 , and fluid enters and exits the driving chamber 401 through the main-side port 411 .

In the embodiment shown in FIG. 2 , the inner diameter of the secondary housing 42 is greater than the inner diameter of the primary housing 41, and the area of the driven plate 433 is greater than that of the active plate 431, so that during the drainage process of the driven cavity 402, The spatial variation of the driven chamber 402 is greater than the spatial variation of the driving chamber 401 , so that the volume of fluid discharged from the driven chamber 402 is greater than the volume of fluid injected into the driving chamber 401 .

In the embodiment shown in FIG. 2 , the flushing mechanism 40 further includes a main-side flexible bellows 412 accommodated in the main-side housing 41 , and the two open ends of the main-side flexible bellows 412 are connected to the main-side housing 41 and the main-side housing 41 respectively. The active plate 431 has a gap between the active plate 431 and the inner wall of the main side housing 41 . When the active plate 431 penetrates into or withdraws from the main-side housing 41, the wall of the main-side flexible bellows 412 is folded or unfolded accordingly. Since the main-side flexible bellows 412 has airtightness, the sealing effect of the driving chamber 401 can be guaranteed. , and can ensure smooth movement of the active plate 431 in the main side housing 41 .

Further, in some embodiments, in order to avoid excessive expansion of the driving chamber 401 due to transmission failure of the compression transmission member 44 and damage to the flexible bellows 412 on the main side, an active plate 431 is formed on the active plate 431 to communicate with the driving chamber 401. The piston assembly 43 also includes a pressure relief spool 435 used to block the pressure relief flow passage 434 under normal conditions and a pressure relief push block 436 connected to the main side housing 41 . In the embodiment shown in FIG. 2 and FIG. 5 , the pressure relief valve core 435 abuts against the port of the pressure relief channel 434 under the action of the elastic member, and the pressure relief push block 436 is arranged close to the opening edge of the main side housing 41 , during the expansion process of the drive chamber 401, when the active plate 431 is about to leave the opening of the main side housing 41, the pressure relief push block 436 abuts against the pressure relief valve core 435, so that the pressure relief valve core 435 leaves the pressure relief flow The fluid in the driving cavity 401 overflows through the pressure relief flow channel 434, thereby preventing the excessive expansion of the driving cavity 401. In some embodiments not shown in the figure, the local inner wall of the main side housing 41 may also be deformed, and the pressure relief valve core 435 leaves the port of the pressure relief channel 434 under the abutment of the deformed inner wall of the main side housing 41 .

In the embodiment shown in FIG. 2 , the flushing mechanism 40 further includes a secondary side flexible bellows 422 housed in the secondary side housing 42 , and the two open ends of the secondary side flexible bellows 422 are respectively connected to the secondary side housing 42 and the secondary side housing 42 . The driven plate 433 has a gap between the driven plate 433 and the inner wall of the secondary housing 42 .

In some embodiments, the flushing mechanism 40 has a compression transmission member 44 for abutting against the inner wall of the driven cavity 402 . When the driven chamber 402 shrinks until its inner wall abuts against the compression transmission member 44, the compression transmission member 44 acts on the main side switching trigger 51 of the first control valve 50, so that the first control valve 50 switches from the flow-through state to the cut-off state. flow state. Since the space of the driven chamber 402 becomes smaller due to compression, there are at least two opposite inner walls in the driven chamber 402, and the distance between the two decreases. It will abut against the compression transmission member 44 , so that the compression transmission member 44 transmits to the main-side switching trigger 51 of the first control valve 50 , and the main-side switching trigger 51 adjusts the internal state of the first control valve 50 .

In the embodiment shown in FIG. 2 , the compression transmission member 44 is installed on the secondary side housing 42 , and the piston assembly 43 abuts against the compression transmission member 44 when it penetrates into the secondary side housing 42 to a certain extent. Specifically, the compression transmission member 44 is passed through the secondary side housing 42, and one end of the compression transmission member 44 faces the driven plate 433, and one end of the compression transmission member 44 is biased toward the driven plate 433 under the action of the elastic member, and the compression transmission member The other end of 44 exposes the secondary housing 42 . When the driven plate 433 penetrates into the secondary housing 42 to a predetermined extent, it abuts against one end of the compression transmission member 44, pushes the compression transmission member 44 to the outside of the secondary housing 42, and the other end of the compression transmission member 44 functions as the first control The main side of the valve 50 switches the trigger 51 . In the embodiment shown in FIG. 2 , the other end of the compression drive member 44 acts on the main-side switching valve member through an intermediate drive member. In some embodiments not shown in the figure, the other end of the compression transmission member 44 is directly connected to the main-side switching trigger member 51 of the first control valve 50 .

In some embodiments, the flushing mechanism 40 further includes a liquid level detecting member 45 penetrating through the driven chamber 402 , and the liquid level detecting member 45 floats up and down depending on the liquid level in the driven chamber 402 . When the liquid level detection member 45 rises to a predetermined height, it acts on the secondary side switching trigger member 81 of the second control valve 80 to switch the second control valve 80 from the on state to the off state.

In the embodiment shown in FIG. 2 , the secondary casing 42 is located on the upper side of the primary casing 41, and the liquid level detecting element 45 is arranged on the upper part of the secondary casing 42. The density of the liquid level detecting element 45 is lower than that of the fluid. Density. When the liquid level in the driven chamber 402 is high, the part of the liquid level detecting member 45 in the driven chamber 402 is submerged by the fluid, and the buoyancy force makes the liquid level detecting member 45 move to the outside of the secondary side housing 42 and act on the first The trigger member 81 is switched on the secondary side of the second control valve 80 , and the second control valve 80 cuts off the supplementary liquid channel, and stops supplementing fluid into the driven chamber 402 . When the driven plate 433 moves down to lower the liquid level in the driven chamber 402 , the liquid level is lower than the liquid level detection piece 45 , and the liquid level detection piece 45 moves down to leave the secondary switching trigger piece 81 of the second control valve 80 , allowing the second control valve 80 to restore the flow of the replenishment channel, allowing the fluid provided by the fluid supply source 900 to inject into the driven chamber 402 . Specifically, the secondary-side housing 42 is provided with a secondary-side port 421 , and the replacement fluid channel is sequentially formed between the fluid supply source 900 , the second control valve 80 and the secondary-side port 421 .

In some implementations, the first control valve 50 and the overflow valve 20 are set separately, so as to adapt to the accommodation space of the body 30 . In the embodiment shown in FIG. 2 , the overflow valve 20 is disposed close to the main side housing 41 or directly connected to the main side housing 41 , while the first control valve 50 is installed according to the remaining space in the body 30 .

The first control valve 50 has various structural forms.

In some embodiments, the first control valve 50 is provided with a main-side output chamber 52 and a main-side inner pilot port 53 communicating with the main-side output chamber 52 . The first control valve 50 is also provided with a main side diaphragm 54 for abutting against the main side inner pilot port 53 . The first control valve 50 is provided with a main-side input chamber 55 on the side of the main-side diaphragm 54 facing away from the main-side inner guide port 53 , and the main-side input chamber 55 is used for communicating with a fluid supply source 900 . The first control valve 50 is also provided with a main-side balance pipe 57 with one end communicating with the main-side output chamber 52 . The main-side switching trigger 51 is used to control the connection between the other end of the main-side balance pipe 57 and the main-side input cavity 55 . The main-side output chamber 52 is intended to communicate to the overflow valve 20 .

Specifically, when the main-side switching trigger 51 isolates the other end of the main-side balance pipe 57 from the main-side input chamber 55, the fluid provided by the fluid supply source 900 enters the main-side input chamber 55, and the fluid in the main-side input chamber 55 The pressure of the fluid acts on one side of the main side diaphragm 54, while the other side of the main side diaphragm 54 is not affected by the fluid pressure. In order to achieve force balance, the other side of the main side diaphragm 54 abuts the main side The edge around the inner guide port 53 makes the main-side input chamber 55 and the main-side output chamber 52 sealed and isolated by the main-side partition 54 . Therefore, the fluid provided by the fluid supply source 900 is prevented from passing through the main side output chamber 52 to the driving chamber 401 .

When the main-side switching trigger 51 makes the other end of the main-side balance pipe 57 communicate with the main-side input chamber 55, the fluid in the main-side input chamber 55 enters the main-side output chamber 52 through the main-side balance pipe 57, and is output on the main side. After the chamber 52 is filled with fluid, the fluid in the main side output chamber 52 also provides a pressure effect on the side of the main side diaphragm 54 facing the main side inner guide port 53, and the fluid pressure on both sides of the main side diaphragm 54 is balanced. Afterwards, the main side spacer 54 leaves the main side inner guide port 53, and when the fluid in the main side input chamber 55 enters the main side input chamber 55 through the gap between the main side spacer 54 and the main side inner guide port 53, due to the fluid The pressure further increases the gap between the main-side partition 54 and the main-side inner guide port 53 , and then the fluid flowing in from the main-side input chamber 55 enters the main-side output chamber 52 through the main-side inner guide port 53 . After the main-side input chamber 55 communicates with the main-side output chamber 52 through the main-side inner guide port 53 , the pressure of the fluid mainly acts on the overflow valve 20 at the rear end.

In the embodiment shown in FIG. 3 , the main-side input cavity 55 communicates with one end of the main-side balance pipe 57 through the main-side guide hole 56 . The main-side switching trigger 51 is close to the main-side guide hole 56 under the action of the elastic member, so that the main-side input cavity 55 is isolated from one end of the main-side balance pipe 57 . When the liquid level detection part 45 acts on the main side switch trigger part 51, the main side switch trigger part 51 moves away from the main side guide hole 56 and unblocks the main side guide hole 56, so that the main side input chamber 55 and the main side balance tube 57 One end is isolated.

By using the main-side switching trigger 51 to control the conduction of the main-side balance pipe 57, the pressure of the fluid is used to make the main-side partition 54 leave the main-side inner guide port 53, so that the main-side input chamber 55 and the main-side output chamber 52 After they are connected, the two have a larger flow cross section through the main side inner guide port 53 .

The overflow valve 20 has various structural forms.

In some embodiments, the overflow valve 20 is provided with a liquid inlet 211a, a liquid outlet 212a and a discharge port 212e, and the first control valve 50 is connected between the liquid inlet 211a and the fluid supply source 900 . The liquid outlet 212 a communicates with the driving cavity 401 , and the drain port 212 e communicates with the driven cavity 402 . In the flow state, the liquid outlet 212a communicates with the liquid inlet 211a and is isolated from the discharge port 212e. In the cut-off state, the liquid outlet 212a communicates with the drain port 212e and is isolated from the liquid inlet 211a, so that the fluid in the driving chamber 401 can be supplemented to the driven chamber 402 through the drain port 212e.

In some embodiments, the relief valve 20 includes a main valve body 21 and a valve core assembly 22 movably disposed in the main valve body 21 . The main valve body 21 is provided with a main channel 212b communicating with the liquid inlet 211a and the liquid outlet 212a. In the flow-through state, the spool assembly 22 is used to isolate the discharge port 212e from the main channel 212b. In the cut-off state, the spool assembly 22 releases the isolation between the discharge port 212e and the main channel 212b, so that after the driven chamber 402 is drained, the water in the driven chamber 401 will be drained during the water replenishment process of the driven chamber 402. The fluid is guided into the driven chamber 402 , which can not only discharge the fluid in the driving chamber 401 but also speed up the replenishment of the driven chamber 402 .

In the embodiment shown in FIG. 8 , the spool assembly 22 has a first state of isolating the discharge port 212e from the main channel 212b and a second state of communicating the discharge port 212e with the main channel 212b. The delay component 23 has an adjustable cavity 234 with a variable size. The adjustment cavity 234 communicates with the main flow channel 212b. When the adjustment cavity 234 expands to a predetermined level when the fluid is injected, the delay component 23 acts on the valve core component 22 to make the valve core component 22 change from the first state to the second state.

Before the main valve body 21 is fed with fluid, the regulating chamber 234 is in an empty state. When the fluid starts to flow into the main valve body 21, the spool assembly 22 is in the first state, and the pressure of the fluid forces the spool assembly 22 to move, so the spool assembly 22 isolates the discharge port 212e from the main channel 212b. In the first state, the fluid in the main channel 212b is injected into the regulating cavity 234 to expand the regulating cavity 234. After the expansion of the regulating cavity 234 reaches a predetermined level, the regulating cavity 234 has a certain volume and when further expanding, it will have a certain volume on the valve core assembly. 22 generates a force to make the spool assembly 22 change from the first state to the second state, releasing the isolation of the discharge port 212e, so that the fluid in the main channel 212b can be discharged through the discharge port 212e. Since the overflow valve 20 is used as the delay time between the two states of the overflow valve 20 from injecting fluid to releasing the discharge port 212e isolation by adjusting the expansion time of the chamber 234, avoiding the need to use electronic devices to control the overflow valve The unloading delay of 20 can reliably start the unloading overflow of the liquid.

At the same time, since the overflow valve 20 automatically realizes the delay of opening the discharge port 212e, it is only necessary to provide a control signal for the first control valve 50 or the second control valve 80 in the sanitary equipment 100, and the state switching of the overflow valve 20 will Due to its own delay control, the control process of the bathroom equipment 100 can be simplified, and the stability of the bathroom equipment 100 can be improved.

The main valve body 21 has various structural forms.

In some embodiments, the main valve body 21 is provided with a discharge bayonet 212c, and the discharge mouth 212e is connected to the main channel 212b through the discharge bayonet 212c. In the first state, the valve core assembly 22 is in sealing contact with the edge of the discharge bayonet 212c.

In some embodiments, the main channel 212b includes a liquid inlet 211a, a liquid outlet 212a and a flow bayonet 211b, and the liquid inlet 211a communicates with the liquid outlet 212a through the flow bayonet 211b. The flow bayonet 211b is opposite to the discharge bayonet 212c, and the spool assembly 22 can abut against the periphery of the flow bayonet 211b and block the flow bayonet 211b. When the fluid flows from the liquid inlet port 211a to the liquid outlet port 212a, the valve core assembly 22 is pushed to the discharge bayonet 212c by the fluid pressure. The valve core assembly 22 moves between the flow bayonet 211b and the discharge bayonet 212c along the flow side linear path. When the fluid is injected from the liquid inlet 211a, the fluid pushes the valve core assembly 22 back to the flow bayonet 211b, and at the same time the valve core assembly 22 approaches the discharge bayonet 212c, so that the valve core assembly 22 finally moves to the isolation station, Blockage is generated on the discharge bayonet 212c. Specifically, a flange facing the discharge bayonet 212c is formed around the flow bayonet 211b. After the initial stage of the flow through is completed, the valve core assembly 22 is pushed back to seal with the flange around the flow bayonet 211b. The abutment can not only prevent the fluid flowing backward from the liquid outlet 212a from flowing to the liquid inlet 211a, but also ensure that the valve core assembly 22 can be reliably pushed to the discharge bayonet 212c when the fluid enters from the liquid inlet 211a.

Further, after the main side switching trigger member 51 is affected by the compression transmission member 44 , the fluid in the main side input chamber 55 flows into the main side output chamber 52 through the main side balance pipe 57 . Due to the sealing contact between the valve core assembly 22 and the flow bayonet 211b, the fluid in the main side output chamber 52 cannot directly flow to the liquid outlet 212a or the drain port 212e until the main side output chamber 52 is completely filled by the fluid. After filling and the fluid in the main side output cavity 52 can generate pressure on the main side diaphragm 54, the pressure of the fluid can continue to act on the valve core assembly 22, so that the liquid inlet 211a communicates with the liquid outlet 212a. The abutment of the valve core assembly 22 against the flow bayonet 211b at the initial stage can ensure reliable release of the main-side partition 54 to the main-side inner guide port 53 .

In some embodiments, a flange is formed around the discharge bayonet 212c towards the liquid inlet 211a. In the initial stage of flow, the valve core assembly 22 is pushed forward by the fluid pressure along the linear path on the flow side to move to the main flow side. The isolation station in the valve body 21. The spool assembly 22 is in sealing contact with the flange around the discharge bayonet 212c to prevent the fluid in the main channel 212b from passing through the discharge bayonet 212c to the discharge port 212e.

In the embodiment shown in FIG. 8 , a discharge cavity 212d is formed in the main valve body 21 , the discharge port 212e is connected to the discharge cavity 212d , and the discharge bayonet 212c is used as an opening of the discharge cavity 212d. After the initial stage of flow, the fluid in the main channel 212b enters the discharge cavity 212d through the discharge bayonet 212c, and then is discharged out of the overflow valve 20 from the discharge cavity 212d through the discharge port 212e.

In some embodiments not shown in the figure, the discharge port 212e may also be disposed on one side of the flow-side linear path, and the thickness of the valve core assembly 22 along the direction of the flow-side linear path is greater than the diameter of the discharge port 212e. When the discharge port 212e moves to a position corresponding to the discharge port 212e, the side wall of the valve core assembly 22 blocks the discharge port 212e, thereby isolating the discharge port 212e from the main channel 212b.

In some embodiments, the main valve body 21 is configured separately, so as to install the valve core assembly 22 into the main valve body 21 . Specifically, the main valve body 21 includes an outer joint 211 and a main valve housing 212 connected to the outer joint 211 . The liquid inlet port 211a is formed on the exposed end of the outer joint 211, and the part of the outer joint 211 that is nested with the main valve housing 212 forms a flow bayonet 211b. The main flow channel 212b is formed on the outer joint 211 and the main valve casing 212 respectively, the liquid outlet 212a is formed on the exposed end of the main valve casing 212 , and the discharge bayonet 212c and the discharge chamber 212d are formed on the main valve casing 212 .

In the embodiment shown in FIG. 8, after the valve core assembly 22 is accommodated in the main valve housing 212, the main valve housing 212 and the outer joint 211 can be fixed by screws or the like, so that the valve core assembly 22 is accommodated. Placed in the main valve body 21. Further, a sealing ring can be provided at the position where the outer joint 211 and the main valve housing 212 are nested and engaged, and the sealing ring is abutted between the outer joint 211 and the main valve housing 212, so as to prevent the fluid in the main channel 212b from flowing from the outer joint 211 and the main valve housing 212. The joint between the main valve housings 212 is leaking. More specifically, the main valve casing 212 is provided with a convex pipe 212f, and the convex pipe 212f communicates with the main flow channel 212b through the control port 212g of the main valve casing 212 .

The valve core assembly 22 has various structural forms.

In some embodiments, the valve core assembly 22 includes a valve core body 221 . The valve core body 221 is movably arranged in the main channel 212b along the linear path on the flow side. Specifically, the flow-side linear path of the valve core body 221 is between the liquid inlet 211a and the discharge bayonet 212c. The movement path of the valve core body 221 points to the liquid inlet 211a. More specifically, the flow-side linear path of the valve core body 221 is between the flow-through bayonet 211b and the discharge bayonet 212c.

In an embodiment not shown in the figure, in the initial stage of flow, the surface side of the valve core body 221 is affected by the pressure of the injected fluid, so that the valve core body 221 is pushed to the isolation working along the forward direction of the linear path of the flow side. bit. When the valve core body 221 is in the isolation position, the back side of the valve core body 221 is in sealing contact with the edge of the drain bayonet 212c. When the adjustment cavity 234 expands to a predetermined extent, the delay assembly 23 transmits liquid pressure to the back side of the valve core body 221, so that the valve core body 221 leaves the isolation station and releases the separation between the discharge port 212e and the main channel 212b. Specifically, the front side and the back side of the valve core body 221 are oppositely disposed, the front side of the valve core body 221 faces the flow bayonet 211b, and the back side of the valve core body 221 faces the flow discharge bayonet 212c.

In the embodiment shown in FIG. 8 and FIG. 9 , the back side of the valve core body 221 is connected with the first leak-proof pad 222 , and the front side of the valve core body 221 is connected with the second leak-proof pad 223 . In the initial stage of flow, the back side of the valve core body 221 is in contact with the flange around the drain bayonet 212c through the first leak-proof pad 222. After the initial stage of flow, the front side of the valve core body 221 It abuts against the flange around the flow bayonet 211b through the second leak-proof pad 223. Since the first leak-proof pad 222 or the second leak-proof pad 223 has elasticity, it can contact the flange around the flow bayonet 212c. Or the flange around the flow bayonet 211b is in full contact, so that the leak-proof performance of the valve core assembly 22 can be improved.

In the embodiment shown in Fig. 8 and Fig. 9, in order to realize the sliding movement of the valve core assembly 22 in the main channel 212b, the surface side of the valve core body 221 is connected with a flow guiding frame 221a, and the back side of the valve core body 221 A discharge guide frame 221b is connected, the flow guide frame 221a is slidably accommodated in the outer joint 211, and the discharge guide frame 221b is slidably accommodated in the discharge cavity 212d. The flow guide frame 221a and the discharge guide frame 221b are respectively provided with flow holes. When the valve core body 221 abuts against the flange around the discharge bayonet 212c through the first leak-proof gasket 222, the part of the flow guide frame 221a is still accommodated in the main flow between the liquid inlet 211a and the flow bayonet 211b. The channel 212b, the fluid injected from the liquid inlet 211a flows to the liquid outlet 212a through the flow hole on the flow guide frame 221a. After the spool body 221 leaves the isolation station, the discharge guide frame 221b remains partly accommodated in the discharge cavity 212d, and the fluid in the main channel 212b enters the discharge cavity 212d through the through hole on the discharge guide frame 221b , and then flow out to the outside of the overflow valve 20 through the discharge port 212e.

The delay component 23 has various structural forms.

In some embodiments, the delay assembly 23 includes a housing 231 connected to the main valve body 21, a piston member 232 movably connected to the housing 231, and a transmission member 233 connected to the piston member 232, and the seal between the piston member 232 and the housing 231 Cooperate to form an adjustment cavity 234 . As the regulator chamber 234 expands with fluid replenishment, the piston member 232 moves along the control side linear path. When the adjustment cavity 234 expands to a predetermined extent, the piston member 232 can drive the transmission member 233 to approach and push the valve core assembly 22, so as to transmit the liquid pressure to the valve core assembly 22, and make the valve core body 221 leave the isolation station to end the flow. The initial phase.

In the embodiment shown in Fig. 8 and Fig. 10, the delay assembly 23 also includes a sealing flexible part 236 for forming the inner wall of the adjustment chamber 234, the sealing flexible part 236 is tapered and has a large end and a small end, the sealing flexible The big end of the sealing flexible part 236 is sealingly connected to the housing 231 , and the small end of the sealing flexible part 236 is sealingly connected to the piston part 232 . Specifically, when no fluid is injected into the regulating chamber 234 , the space of the regulating chamber 234 shrinks, so that the piston member 232 abuts against the housing 231 to form an inner wall of the regulating chamber 234 . When the main channel 212b gradually injects fluid into the adjustment chamber 234, the space of the adjustment chamber 234 expands, and the piston member 232 moves away from the inner wall of the housing 231 to form the adjustment chamber 234, and passes through the transmission member when the adjustment expands to a predetermined degree. 233 transmits the pressure of the fluid to the valve core body 221 .

More specifically, as shown in FIG. 8 and FIG. 10 , the area of the piston member 232 for bearing the fluid pressure in the regulating cavity 234 is larger than the area of the valve core assembly 22 for bearing the fluid pressure in the main channel 212b at the initial stage of flow. Since the regulating chamber 234 communicates with the main passage 212b through the delay flow passage 235 at the initial stage of flow, when the regulating chamber 234 expands to a predetermined degree, the valve core body 221 blocks the movement of the piston member 232 through the transmission member 233, limiting the adjustment With further expansion of the chamber 234, the flow rate through the delay channel 235 gradually decreases, but the pressure between the regulating chamber 234 and the main channel 212b is gradually balanced. Since the pressure of the fluid on the valve core body 221 or the piston member 232 is related to the pressure and the force-bearing area, when the pressure between the joint cavity and the main flow channel 212b is close, because the force-bearing area of the piston member 232 toward the adjustment chamber 234 side is larger than that of the valve The force bearing area of the core body 221 makes the force of the piston part 232 greater than the force of the valve core body 221, so that when the piston part 232 pushes the valve core assembly 22 through the transmission part 233, the valve core body 221 can overcome the surface side Suffering fluid pressure and leaving the isolation station.

In the embodiment shown in FIG. 10 , in order to ensure sealing performance, the small end of the flexible sealing member 236 is closed, while the large end is open. The piston part 232 includes a first piston block 232a and a second piston block 232b, and the closed end of the sealing flexible part 236 is clamped between the first piston block 232a and the second piston block 232b, so that the adjustment cavity 234 has a good seal performance, while reducing the resistance when the piston member 232 moves. Specifically, the first piston block 232a is located outside the adjustment cavity 234 and connected to the transmission member 233, the second piston block 232b is located inside the adjustment cavity 234, and the first piston block 232a and the second piston block 232b are fixedly connected by screws or other fixing methods.

In the embodiment shown in Fig. 8 and Fig. 10, the housing 231 includes a first sub-shell 231a and a second sub-shell 231b, the first sub-shell 231a is used to cooperate with the piston member 232 to form an adjustment chamber 234, the first sub-shell 231a is connected to the main valve housing 212 through the second sub-housing 231b. Specifically, the second sub-housing 231b is integrated with the main valve housing 212 to simplify the assembly of the overflow valve 20 . More specifically, the large end of the sealing flexible member 236 radially extends with an annular edge, and the annular edge is clamped between the first sub-shell 231a and the second sub-shell 231b, thereby facilitating the assembly of the sealing flexible member 236 and improving adjustment. The tightness of cavity 234.

In an embodiment not shown in the figure, it is also possible to make the inner cavity of the housing 231 cylindrical, and the edge of the piston member 232 is kept in sealing contact with the inner wall of the housing 231 when moving relative to the housing 231, so that the piston member 232 A variable-sized adjustment chamber 234 is formed between the inner wall of the housing 231 and the housing 231 . In other implementation manners, the piston member 232 and the housing 231 can also adopt other ways to seal fit.

In the embodiment shown in FIG. 8 , the transfer member 233 is used to push the back side of the valve core body 221 to make the valve core body 221 leave the discharge bayonet 212c. Specifically, an insertion hole is formed on the main valve casing 212, and the transmission member 233 is rod-shaped and penetrates in the insertion hole along the axial direction of the insertion hole, so as to limit the movement direction of the piston member 232 and allow the expansion degree of the adjustment chamber 234 There is a more linear relationship with the moving distance of the piston member 232 along the linear path on the control side, so that each time the regulating chamber 234 expands to a predetermined degree, it can push the valve core body 221 . More specifically, the diameter of the transmission member 233 is smaller than the inner diameter of the discharge cavity 212d to avoid blocking the fluid in the discharge cavity 212d from flowing to the discharge port 212e.

In some embodiments, the delay assembly 23 further includes a first elastic member 238 connected to the spool assembly 22, and the first elastic member 238 is used to move the spool assembly 22 away from the discharge bayonet 212c to reduce transmission The thrust requirement of the 233 on the spool assembly 22. Specifically, as shown in FIG. 9, the first elastic member 238 abuts between the valve core assembly 22 and the main valve body 21, and can exert elasticity on the valve core assembly 22 from the discharge bayonet 212c toward the flow bayonet 211b. Force, so as to ensure that the fluid injected from the liquid inlet 211a can push the valve core body 221 to move before the initial stage of flow. More specifically, the first elastic member 238 is a compression spring, and abuts between the back side of the valve core body 221 and the inner wall of the discharge cavity 212d.

In some embodiments, the delay assembly 23 further includes a second elastic member 239 connected to the transfer member 233 or the piston member 232, and the second elastic member 239 is used to turn the transfer member 233 or the piston member 232 It will move in the direction of compressing the regulating cavity 234 to discharge the fluid in the regulating cavity 234 to the main channel 212b along the delay flow channel 235 . In the embodiment shown in FIG. 8 and FIG. 10 , the second elastic member 239 is a compression spring and is accommodated in the second sub-housing 231b, and the two ends of the second elastic member 239 abut against the main valve housing 212 and the second Between a piston block 232a, the adjustment chamber 234 can be compressed by the piston piece 232 . Specifically, the side of the first piston block 232 a facing the second elastic member 239 is provided with an annular groove for accommodating one end of the second elastic member 239 and positioning the second elastic member 239 .

In some embodiments, the delay assembly 23 further includes a tube body 237 , one end of the tube body 237 is connected to the main flow channel 212 b, and the other end is connected to the adjustment cavity 234 . In the embodiment shown in FIG. 8 , one end of the tube body 237 is connected to the main valve body 21 , specifically, one end of the tube body 237 is sleeved on the convex tube 212f. In an embodiment not shown in the figure, the other end of the tube body 237 is connected to the casing 231 . The tube body 237 has a time-delay channel 235 inside. One end of the time-delay channel 235 communicates with the main channel 212b, and the other end communicates with the regulating cavity 234 .

Optionally, in some embodiments, the pipe body 237 is detachably connected to the main valve body 21 and the housing 231 respectively. By replacing the pipe body 237 with a different inner diameter, the cross-sectional area of the delay flow channel 235 can be changed, thereby The initial stage of flow can control the flow from the main channel 212b into the regulating chamber 234, and then the time required for the regulating chamber 234 to expand to a predetermined level and the duration of the initial stage of flow can be adjusted to meet the control requirements of the sanitary equipment 100.

In some embodiments, the tube body 237 is a hose, so as to accommodate the accommodating space of the overflow valve 20 and reduce the chance of the tube body 237 being broken.

In some embodiments not shown in the figure, when the housing 231 and the main valve body 21 are integrally formed, the time-delay channel 235 is respectively formed on the housing 231 and the main valve body 21 .

In an embodiment not shown in the figure, the function of the transmission member 233 or the piston member 232 to push the valve core assembly 22 can also be removed, and it is adjusted so that after the expansion of the adjustment chamber 234 reaches a predetermined degree, the adjustment chamber 234 has a certain volume and further When expanding, a force is exerted on the switching trigger 51 on the main side, so that the first control valve 50 changes from a flow-through state to a flow-block state, and the fluid output from the stop fluid supply source 900 is input into the drive chamber 401 through the first control valve 50 . In another embodiment not shown in the figure, after the expansion of the adjustment chamber 234 reaches a predetermined level, the adjustment chamber 234 has a certain volume and is further expanded, and the transmission member 233 or the piston member 232 simultaneously pushes the spool assembly 22 and The main-side switching trigger 51 generates a force to make the spool assembly 22 change from the first state to the second state and to make the first control valve 50 change from the flow-through state to the flow-block state, using the first The control valve 50 stops the fluid input from the fluid supply source 900 and at the same time opens the flow path from the driving cavity 401 to the driven cavity 402 .

In some embodiments, the spill valve 20 also includes a throttle assembly 24 .

The main channel 212b communicates with the regulating chamber 234 through a throttling assembly 24, and the throttling assembly 24 is used to control the flow rate of the fluid flowing from the main channel 212b to the regulating chamber 234 at the initial stage of flow.

In the embodiment shown in FIG. 8 , one end of the tube body 237 is connected to the main valve body 21 , and the other end of the tube body 237 is connected to the regulating cavity 234 through the throttling assembly 24 . Specifically, a throttling seat 231c is formed on the outer side of the casing 231, and a transition hole 231d is also provided on the casing 231, and the adjustment cavity 234 communicates with the inner cavity of the throttling seat 231c through the transition hole 231d. The throttle assembly 24 includes a throttle core 241 accommodated in the throttle seat 231c and a throttle cover 242 detachably connected to the throttle seat 231c. The throttle core 241 is provided with a throttle hole 243 . By replacing the throttling core 241 with a different size of the throttling hole 243 , the flow rate of the fluid flowing from the main channel 212 b to the regulating cavity 234 can be adjusted at the same time. More specifically, the other end of the tube body 237 is nested with the throttle cap 242, and the throttle cap 242 is screwed to the throttle seat 231c, and the tube body 237 is a hose.

Further, the side of the throttle core 241 close to the transition hole 231d is connected to the throttle leak-proof pad 244, and the throttle core 241 and the housing 231 are abutted by the throttle leak-proof pad 244 to prevent the fluid from bypassing the throttle. hole 243 to flow into the transition hole 231d. Further, there is a gap between the edge of the throttle core 241 or the throttle leak-proof pad 244 and the inner wall of the throttle seat 231c, in the direction from the throttle core 241 close to the transition hole 231d to away from the transition hole 231d, The throttle core 241 has a movable gap in the throttle seat 231c, so that at the initial stage of flow, the fluid flowing from the main channel 212b to the adjustment cavity 234 pushes the throttle core 241 to fit the housing 231, and is Restricted by the throttling and leak-proof gasket 244 , fluid can only enter the regulating cavity 234 through the throttling hole 243 . After the initial stage of through-flow is over, the regulating cavity 234 is compressed and the internal fluid is discharged to the main channel 212b through the delay channel 235. Since the inner diameter of the transition hole 231d is larger than the inner diameter of the orifice 243, at the same time, the inner diameter of the throttling core After 241 moves away from the transition hole 231d, the fluid in the throttle seat 231c can flow around the throttle hole 243 along the gap between the throttle core 241 and the inner wall of the throttle seat 231c and the flow hole of the throttle core 241. The hose makes the flow rate of the regulating chamber 234 when the fluid is discharged can be greater than the flow rate entering the regulating chamber 234 at the initial stage of through-flow, so that the emptying of the regulating chamber 234 can be accelerated.

In an embodiment not shown in the figure, the throttling assembly 24 also includes a throttling elastic member connected to the throttling core 241 for moving the throttling core 241 away from the transition hole 231d, so as to After the stage ends, the fluid flowing out from the transition hole 231d is prevented from being blocked by the throttling anti-leakage pad 244 .

The second control valve 80 has various structural forms.

In some embodiments, the second control valve 80 is provided with a secondary side output cavity 82 and a secondary side internal guide port 83 communicating with the secondary side output cavity 82 . The second control valve 80 is also provided with a secondary side diaphragm 84 for abutting against the secondary side inner pilot port 83 . The second control valve 80 is provided with a secondary side input cavity 85 on the side of the secondary side diaphragm 84 facing away from the secondary side inner guide port 83 , and the secondary side input cavity 85 is used for communicating with a fluid supply source 900 . The second control valve 80 is also provided with a secondary balance pipe 86 with one end communicating with the secondary output chamber 82 . The secondary switching trigger 81 is used to control the connection between the other end of the secondary balancing tube 86 and the secondary input chamber 85 . The secondary output chamber 82 is used to communicate to the driven chamber 402 . When the secondary-side input chamber 85 communicates with the secondary-side output chamber 82 through the secondary-side inner guide port 83 , the second control valve 80 is in a connected state. When the secondary-side input chamber 85 and the secondary-side output chamber 82 are separated by the secondary-side diaphragm 84 , the second control valve 80 is in a closed state.

The working principle of the embodiment shown in Fig. 2 and Fig. 6 is as follows:

In an initial state, the fluid in the driving cavity 401 is emptied, and the active plate 431 is at a position deep into the main side casing 41 . The driven chamber 402 is fully expanded and filled with fluid. The discharge port 212e of the overflow valve 20 is in communication with the main flow. The fluid provided by the fluid supply source 900 enters the main-side input chamber 55 , but is blocked by the main-side partition 54 and cannot enter the main-side output chamber 52 . In addition, because the liquid level in the driven chamber 402 is high, the liquid level detection member 45 floats up and acts on the secondary switching trigger 81, so that the second control valve 80 is turned off, and the flow of the fluid supply source 900 into the driven chamber 402 is stopped. Add fluid.

Operate the main-side switching trigger 51 to make the main-side switching trigger 51 leave the main-side guide hole 56 , and the fluid in the main-side input chamber 55 enters the main-side output chamber 52 through the main-side guide hole 56 and the main-side balance pipe 57 sequentially. After the main side output chamber 52 is filled with fluid, the main side partition 54 is opened from the main side inner guide port 53, so that the fluid in the main side input chamber 55 enters the main side output chamber through the main side inner guide port 53 with a larger area. 52. The spool assembly 22 of the overflow valve 20 is switched to the first state under the action of the fluid from the output chamber 52 on the primary side, so that the driving chamber 401 communicates with the fluid supply source 900 and is isolated from the driven chamber 402 . The fluid provided by the fluid supply source 900 is injected into the driving cavity 401, so that the active plate 431 withdraws from the primary side casing 41 and moves, and at the same time, the active plate 431 acts on the driven plate 433 through the transition rod 432, so that the driven plate 433 goes deep into the secondary side casing 42 moves, the space of the driven chamber 402 shrinks, and the fluid stored in the driven chamber 402 is discharged to the main body 30 through the secondary port 421 .

When the space in the driven cavity 402 shrinks to a certain extent, the driven plate 433 abuts against the compression transmission member 44, and by compressing the transmission member 44, the main-side switching trigger 51 returns to the state of abutting against the main-side guide hole 56 . As the pressure of the fluid in the main-side output chamber 52 gradually decreases, the main-side spacer 54 recovers to abut against the main-side inner guide port 53 under its own shape memory characteristics, preventing the fluid supply source 900 from continuing to inject into the drive chamber 401 Fluid, the driving chamber 401 stops expanding due to the loss of fluid injection, and the drainage of the driven chamber 402 ends at the same time. After the draining of the driven chamber 402 ends, the delay of the overflow valve 20 ends, so that the discharge port 212e communicates with the main channel 212b.

The piston assembly 43 moves toward the primary side housing 41 under the action of the reset driver 46, the driven plate 433 withdraws from the secondary side housing 42, the water level in the driven chamber 402 drops, and the liquid level detection member 45 floats down and leaves the second control panel. The secondary side of the valve 80 switches the trigger 81 to make the second control valve 80 conduct, and the fluid supply source 900 supplements the flow to the driven chamber 402 . After the reserve fluid in the driven chamber 402 increases, the gravity of the fluid in the driven chamber 402 compresses the driving chamber 401 through the piston assembly 43, and the fluid in the driving chamber 401 is discharged through the overflow valve 20 under pressure To the driven chamber 402. In the embodiment shown in FIG. 2 , the reset driving member 46 is a tension spring, and is connected between the driven plate 433 and the main side housing 41 .

When the driven plate 433 moves to the limit along the direction of withdrawing from the secondary housing 42, the driven chamber 402 cannot be further expanded, and the liquid level in the driven chamber 402 gradually rises until the liquid level detection member 45 floats up and acts on the The trigger member 81 is switched on the secondary side to close the second control valve 80 and stop the fluid supply source 900 from supplementing the driven chamber 402 with fluid.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. A drainage device, characterized in that, comprising: The flushing mechanism has a drive chamber with a variable size and a driven chamber with a variable size; when the space of the drive chamber expands, the drive chamber shrinks the space of the driven chamber through transmission, and the driven chamber shrinks. The spatial variation of the cavity is greater than the spatial variation of the driving cavity; The first control valve has a flow-through state for opening the liquid injection channel of the drive chamber and a flow-off state for closing the liquid injection channel of the drive chamber; An overflow valve, connected between the driving chamber and the driven chamber; used to isolate the driven chamber from the driving chamber in the flow-through state and to isolate the driven chamber in the cut-off state communicating with the drive cavity; and The second control valve is used to control the opening and closing of the supplementary liquid channel of the driven chamber according to the liquid level in the driven chamber. 2. The drainage device according to claim 1, wherein the overflow valve is provided with a liquid inlet, a liquid outlet, and a discharge port, and the second liquid inlet is connected to the fluid supply source. A control valve; the liquid outlet is connected to the drive chamber, and the discharge port is connected to the driven chamber; in the flow state, the liquid outlet is isolated from the discharge port; In the cut-off state, the liquid outlet communicates with the discharge port. 3. The drainage device according to claim 2, wherein the overflow valve comprises a main valve body and a spool assembly movably arranged in the main valve body; the main valve body is provided with a main passage, so The main channel connects the liquid inlet and the liquid outlet; in the flow-through state, the valve core assembly is used to isolate the discharge port from the main channel; in the cut-off state Next, the valve core assembly releases the isolation between the discharge port and the main flow channel. 4. The drainage device according to claim 3, wherein the spool assembly has a first state of isolating the drain port from the main channel and isolating the drain port from the main channel. The second state of communication; the overflow valve also includes a delay assembly, and the delay assembly has a variable-sized adjustment chamber; the adjustment chamber communicates with the main channel; wherein, the adjustment chamber is in fluid injection When expanding to a predetermined degree, the delay component acts on the valve core component to make the valve core component change from the first state to the second state; When the expansion reaches a predetermined level, the delay component acts on the first control valve to make the first control valve switch from a flow-through state to a flow-block state. 5. The drainage device according to claim 1, characterized in that, the flushing mechanism has a compression transmission member for abutting against the inner wall of the driven chamber; when the driven chamber shrinks to its inner wall and When the compression transmission member abuts, the compression transmission member acts on the main-side switching trigger of the first control valve, so that the first control valve switches from the flow-through state to the flow-block state. 6. The drainage device according to claim 5, characterized in that, the first control valve is provided with a main-side output chamber and a main-side inner guide port communicating with the main-side output chamber; the first control valve There is also a main side diaphragm for abutting against the main side inner guide port; the first control valve is provided with a main side input cavity on the side of the main side diaphragm facing away from the main side inner guide port , the main-side input chamber is used to communicate with a fluid supply source; the first control valve is also provided with a main-side balance pipe with one end used to communicate with the main-side output chamber; the main-side switching trigger is used to control the The other end of the main side balance pipe is connected to the main side input cavity. 7. The drainage device according to claim 5, wherein the flushing mechanism comprises a secondary side casing and a piston assembly, and the piston assembly is movably mounted on the secondary side casing to cooperate to form the The driven cavity: the compression transmission part is installed on the secondary side casing, and the piston assembly abuts against the compression transmission part when it penetrates into the secondary side casing. 8. The drainage device according to claim 1, characterized in that, the flushing mechanism further comprises a liquid level detection piece pierced in the driven chamber, and the liquid level detection piece is received by the driven chamber The liquid level rises and falls; when the liquid level detection element rises to a predetermined height, it acts on the secondary switching trigger element of the second control valve, so that the second control valve is switched from the on state to the off state state. 9. The drainage device according to claim 1, characterized in that, the first control valve and the overflow valve are set separately. 10. A bathroom equipment, characterized in that it comprises: the drainage device according to any one of claims 1 to 9 and a body connected to the drainage device; the body is provided with a liquid pool, and the bottom of the liquid pool is provided with There is a sewage outlet, and the fluid discharged from the driven chamber is output to the liquid pool and/or the sewage outlet of the body, so as to flush the inner wall of the liquid pool and/or discharge the dirt from the sewage outlet.

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