CN217482075U - Intelligent closestool and pressure stabilizing valve thereof - Google Patents

Abstract

The utility model relates to an intelligent closestool and surge damping valve thereof. The pressure stabilizing valve comprises a valve body and a self-balancing valve group, wherein the valve body is provided with a valve cavity, an inlet flow channel, an outlet flow channel and a control channel, the valve cavity comprises an adjusting channel and a main cavity, the adjusting channel is provided with a first end and a second end, the first end is respectively communicated with the inlet flow channel and the main cavity, the main cavity is respectively communicated with the outlet flow channel and the control channel, the inlet flow channel is used for inputting fluid and has input pressure, the outlet flow channel is used for outputting fluid and has output pressure, and the control channel is used for supplying reference pressure. The self-balancing valve group is arranged in the main cavity, cuts off the second end and moves along the adjusting channel to adjust the flow of the first end. The self-balancing valve group is used for responding to the difference change between the input pressure and the reference pressure and adjusting the flow so as to keep the output pressure stable. The pressure stabilizing valve can output stable different water outlet pressures, and the requirements of different users on different cleaning water pressures are met.

Description

Intelligent closestool and pressure stabilizing valve thereof

Technical Field

The utility model relates to a sanitary bath equipment technical field especially relates to an intelligent closestool and surge damping valve thereof.

Background

Along with the continuous improvement of computer technology, automatic control technology and people's quality of life, intelligent degree of intelligent closestool is higher and higher, and is more humanized, popularization. The intelligent closestool usually comprises a flushing waterway system and a cleaning waterway system, the flushing waterway system can automatically flush and clean the closestool, and the cleaning waterway system can automatically clean the body part of a user. The intelligent closestool is gradually favored by people with the advantages of intelligent cleaning, cleanness, sanitation, comfortable preheating, convenient operation, energy conservation, power conservation and the like.

At present, an intelligent closestool is generally provided with a pressure stabilizing valve, an inlet of the pressure stabilizing valve is directly communicated with a tap water pipe, and an outlet of the pressure stabilizing valve is respectively communicated with a washing water path system and a cleaning water path system, so that the effect of stabilizing the water pressure of outlet water is achieved. Because the effluent water pressure of the pressure stabilizing valve is constant, the cleaning water pressure of the cleaning water path system is fixed, and different requirements of different users on the cleaning water pressure cannot be met.

SUMMERY OF THE UTILITY MODEL

Based on this, provide a surge damping valve, aim at output stable different play water pressure to satisfy different users' requirement to different washing water pressure.

A pressure maintaining valve comprising:

a valve body having a valve cavity, an inlet flow passage, an outlet flow passage and a control passage, the valve cavity including a regulation passage and a main chamber, the regulation passage having a first end and a second end, the first end communicating with the inlet flow passage and the main chamber, respectively, the main chamber communicating with the outlet flow passage and the control passage, respectively, the inlet flow passage for inputting a fluid to have an input pressure, the outlet flow passage for outputting the fluid to have an output pressure, and the control passage for supplying a reference pressure; and

the self-balancing valve group is arranged in the main cavity, cuts off the second end, moves along the adjusting channel and adjusts the flow rate of the first end; the self-balancing valve group is used for responding to the difference change between the input pressure and the reference pressure and adjusting the flow rate so as to keep the output pressure stable.

In one embodiment, the self-balancing valve block comprises:

the diaphragm is arranged in the main cavity in a deformable manner, so that the main cavity is divided into a first cavity and a second cavity, the first cavity is respectively communicated with the adjusting channel and the outlet flow channel, and the second cavity is communicated with the control channel;

the valve core assembly moves along the adjusting channel to adjust the flow of the first end and cut off the second end; and

the elastic piece is abutted against the valve core assembly, so that the valve core assembly is abutted against the diaphragm.

In one embodiment, the valve core assembly comprises:

the valve core is provided with a conical surface which is arranged corresponding to the first end and used for adjusting the flow; and

the first sealing ring is nested on the valve core and abutted between the inner surface of the adjusting channel and the outer surface of the valve core.

In one embodiment, the valve core penetrates through two ends of the adjusting channel and the diaphragm; the valve core assembly further comprises a connecting piece and an installation sleeve, the connecting piece is arranged in the first cavity and sleeved on the valve core, and the installation sleeve is arranged in the second cavity and sleeved with one end of the valve core; the diaphragm is tightly attached between the connecting piece and the mounting sleeve, and the elastic piece is abutted against the connecting piece.

In one embodiment, a support part is arranged in the second cavity and is matched with the mounting sleeve.

In one embodiment, the valve body comprises a valve bottom and a valve cover, wherein the valve cover covers the valve bottom to clamp the diaphragm; the inlet flow channel, the adjusting channel, the first cavity and the outlet flow channel are all arranged in the valve cover, and the control channel and the second cavity are all arranged in the valve bottom.

In one embodiment, the periphery of the diaphragm is provided with a flange, the valve cover is provided with an annular groove, and the flange is accommodated in the annular groove.

In one embodiment, a first sealing convex ring is arranged on the outer side surface of the flanging, and the first sealing convex ring is abutted with the side wall of the annular groove.

In one embodiment, the diaphragm is provided with a second sealing convex ring, and the second sealing convex ring is abutted with the end face of the valve bottom.

An intelligent closestool comprises a pressure stabilizing valve and a pressure source;

wherein, the surge damping valve includes:

the valve body is provided with a valve cavity, an inlet flow passage, an outlet flow passage and a control passage, the valve cavity comprises an adjusting passage and a main cavity, the adjusting passage is provided with a first end and a second end, the first end is respectively communicated with the inlet flow passage and the main cavity, the main cavity is respectively communicated with the outlet flow passage and the control passage, and the pressure source is communicated with the control passage; the inlet flow passage has an input pressure for inputting a fluid, the outlet flow passage has an output pressure for outputting the fluid, and the control passage is used for supplying a reference pressure; and

the self-balancing valve group is arranged in the main cavity, cuts off the second end, moves along the adjusting channel and adjusts the flow of the first end; the self-balancing valve group is used for responding to the difference value change between the input pressure and the reference pressure and adjusting the flow quantity so as to keep the output pressure stable.

According to the pressure stabilizing valve, the change of input pressure is adjusted by setting given reference pressure, and the self-balancing valve group of the pressure stabilizing valve responds to the change of pressure difference to automatically adjust the flow of a valve port, so that the output pressure of fluid is automatically adjusted in a dynamic balance manner, and the pressure stabilizing effect is improved. And the reference pressure can be set according to the pressure source, and then the output pressure can be correspondingly and adjustably set so as to meet the requirements of different water outlet pressures of different users.

Drawings

Fig. 1 is a schematic block diagram of an intelligent toilet according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a pressure maintaining valve of the intelligent closestool in FIG. 1;

FIG. 3 is an exploded view of the pressure maintaining valve of FIG. 2;

FIG. 4 is a top view of the pressure maintaining valve of FIG. 2;

FIG. 5 is a cross-sectional view of the pressure maintaining valve of FIG. 4 taken along line I-I;

fig. 6 is a cross-sectional view of the valve body of the pressure maintaining valve of fig. 2.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. 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 the like are for purposes of illustration only and do not denote a single embodiment.

Referring to fig. 1, fig. 1 shows a schematic block diagram of an intelligent toilet according to an embodiment of the present invention, and fig. 2 shows a schematic structural diagram of a pressure stabilizing valve of the intelligent toilet in fig. 1, an embodiment of the present invention provides an intelligent toilet 100, which includes a clean water path system 200, a pressure stabilizing valve 300 and a pressure source 400. The pressure maintaining valve 300 has an inlet 302, an outlet 304 and a control port 306, wherein the inlet 302 is connected to the external pipe 204 via the connection pipe 202 for inputting fluid (such as tap water or cleaning liquid), and the inlet 302 has an input pressure. The outlet 304 is in communication with the clean water circuit system 200 for outputting the fluid to the clean water circuit system 200 at a constant pressure, and the outlet 304 has an output pressure. The control port 306 is in communication with a pressure source 400, which pressure source 400 may input other fluids (e.g., air, water, or hydraulic oil) into the regulator valve 300 through the control port 306 to provide a reference pressure to the regulator valve 300.

The pressure stabilizing valve 300 of the intelligent toilet 100 of the present embodiment may respond to a change in the difference between the input pressure and the reference pressure to maintain the output pressure of the outlet 304 constant, thereby achieving pressure stabilization. Since the reference pressure can be adjusted by the pressure source 400, the magnitude of the constant output pressure can be adjusted to meet the requirements of different users for different output pressures.

In the present invention, the external pipe 204 may be a tap water pipe, i.e. the fluid is tap water. The external line 204 may be in communication with a tank of cleaning fluid, i.e. the fluid is cleaning fluid. The pressure source 400 may be an air pump, a water pump, a hydraulic pump, or the like. It is understood that in other embodiments, the pressure maintaining valve 300 and the pressure source 400 may be part of the clean waterway system 200, i.e., the clean waterway system 200 includes the pressure maintaining valve 300 and the pressure source 400.

In this embodiment, the intelligent toilet 100 further includes a flushing waterway system 500, the flushing waterway system 500 is communicated with the external pipeline 204 through the connecting pipe 202, and a pressure regulating valve may be built in the flushing waterway system 500 to stabilize the water pressure of the flushing water flow. It is understood that in other embodiments, the flushing waterway system 500 and the clean waterway system 200 may share the pressure maintaining valve 300, that is, the outlet 304 of the pressure maintaining valve 300 is communicated with the flushing waterway system 500 and the clean waterway system 200 respectively; alternatively, the flush waterway system 500 includes the above-described pressure maintenance valve 300 and the pressure source 400.

The clean water path system 200 of the intelligent toilet 100 of the present embodiment plays a role of automatically cleaning the body part of the user, and the specific structure thereof may refer to the prior art and will not be described herein. The flushing waterway system 500 of the intelligent toilet 100 of this embodiment plays a role in automatically flushing and cleaning the toilet, and the specific structure thereof can refer to the prior art and is not described herein.

With reference to fig. 3 to 6, fig. 3 shows an exploded view of a pressure maintaining valve of the intelligent toilet according to the embodiment, fig. 4 shows a top view of the pressure maintaining valve of the intelligent toilet according to the embodiment, fig. 5 shows a cross-sectional view of the pressure maintaining valve in fig. 4 along the line I-I, and fig. 6 shows a cross-sectional view of a valve body of the pressure maintaining valve of the intelligent toilet according to the embodiment. The surge damping valve 300 includes a valve body 600 and a self-balancing valve block 700, the self-balancing valve block 700 being disposed within the valve body 600. The self-balancing valve set 700 can automatically adjust the pressure balance according to the change of the input pressure, so as to ensure the stability of the output pressure.

Specifically, the valve body 600 has a valve chamber 610, an inlet flow passage 620, an outlet flow passage 622, and a control passage 624. The valve chamber 610 includes a regulating passage 611 and a main chamber 612, the regulating passage 611 has a first end 613 and a second end 614, the first end 613 is respectively communicated with the inlet channel 620 and the main chamber 612, and a port of the first end 613 is a valve port for regulating the flow rate. The main chamber 612 is respectively communicated with the outlet flow passage 622 and the control passage 624. Fluid enters the valve chamber 610 from the inlet flow passage 620 and exits the outlet flow passage 622 through the valve chamber 610. The pressure source 400 is in communication with the control passage 624, and fluid provided by the pressure source 400 enters the valve chamber 610 through the control passage 624.

The inlet 302 of the regulator valve 300 is disposed at the outer end of the inlet flow passage 620, and the inlet flow passage 620 has the same input pressure as the inlet 302. The outlet 304 of the regulator valve 300 is disposed at the outer end of an outlet flow passage 622, the outlet flow passage 622 having the same output pressure as the outlet 304. The control port 306 of the regulator valve 300 is provided at the outer end of a control passage 624, and the control passage 624 is used to supply a reference pressure. Self-balancing valve block 700 is disposed in main chamber 612, and moves along regulating channel 611 to regulate the flow rate at first end 613 and block second end 614, i.e. control the opening of the valve port to control the flow rate of fluid entering main chamber 612 from the valve port. The self-balancing valve pack 700 is used to adjust the amount of flow in response to changes in the difference between the input pressure and the reference pressure to maintain a stable output pressure.

Given the reference pressure, when the input pressure of the fluid becomes higher, the pressure difference between the two forces the self-balancing valve set 700 to move along the regulating channel 611, so that the opening of the valve port is reduced, i.e. the flow rate of the fluid controlling the first end 613 becomes lower, to stabilize the output pressure of the fluid, and not become higher due to the higher input pressure. When the input pressure of the fluid becomes smaller, the pressure difference between the two forces the self-balancing valve set 700 to move along the regulating channel 611, so as to increase the opening of the valve port, i.e. control the fluid flow rate at the first end 613 to become larger, so as to stabilize the output pressure of the fluid, and not become smaller due to the smaller input pressure. Therefore, the change of the input pressure is adjusted by setting the given reference pressure, and the self-balancing valve set 700 of the pressure stabilizing valve 300 responds to the change of the pressure difference to automatically adjust the flow rate of the valve port so as to automatically adjust the dynamic balance of the output pressure of the fluid, thereby improving the pressure stabilizing effect and realizing the constant output pressure. Moreover, the reference pressure can be set according to the pressure source 400, and the output pressure can be correspondingly set in an adjustable manner, so as to meet the requirements of different users for different water outlet pressures.

It should be noted that, in the present invention, the constant output pressure of the pressure maintaining valve 300 is not an absolute constant, and it may have a reasonable error range.

With reference to fig. 3 and 5, further, the self-balancing valve set 700 includes a diaphragm 710, a valve core assembly 720, and a resilient member 730. The diaphragm 710 is deformable within the main chamber 612 to divide the main chamber 612 into a first chamber 615 and a second chamber 616. The first cavity 615 is respectively communicated with the adjusting channel 611 and the outlet flow channel 622, and the second cavity 616 is communicated with the control channel 624. The spool assembly 720 moves along the tuning channel 611 to adjust the amount of flow at the first end 613 and to block the second end 614, i.e., to control the amount of flow of fluid from the first end 613 into the main chamber 612 by controlling the size of the opening at the first end 613 (valve port). The resilient member 730 abuts the spool assembly 720 such that the spool assembly 720 abuts the diaphragm 710. It is evident that the pressure P1 to which the diaphragm 710 is subjected in the first cavity 615 comprises: the water pressure Pa in the first cavity 615 and the pressure Pb applied by the elastic member 730 through the valve core assembly 720, i.e., Pa + Pb of P1. The pressure P2 experienced by diaphragm 710 within second chamber 616 is simply a reference pressure. When the pressure maintaining valve 300 is in the balanced state, the pressure direction of P1 is P2, and the pressure direction of P1 is opposite to that of P2.

The operation principle of the pressure maintaining valve 300 of the present embodiment will be explained based on two cases of increasing the input pressure and decreasing the input pressure as follows:

(1) when the input pressure increases, the flow passing through the inlet channel 620 increases, the water level in the first cavity 615 increases, the water pressure Pa in the first cavity 615 increases, the pressure P1 also increases, P1 > P2, the diaphragm 710 deforms downward when being pressed, the linkage valve core assembly 720 moves downward, the opening of the valve port adjusted by the valve core assembly 720 becomes smaller, that is, the flow of the first end 613 is controlled to become smaller, so that the water level in the first cavity 615 decreases, and the output pressure is automatically adjusted to maintain the output pressure constant. As the pressure regulator valve 300 gradually returns to equilibrium, the pressure across the diaphragm 710 again returns to equilibrium, i.e., P1 — P2. When the opening of the valve port adjusted by the valve core assembly 720 is too small, the flow rate flowing through the valve port becomes small, the water level in the first cavity 615 drops, the water pressure Pa in the first cavity 615 becomes small, the P1 also becomes small, P1 is less than P2, the diaphragm 710 is pressed and deformed upwards, the linkage valve core assembly 720 moves upwards, the opening of the valve port adjusted by the valve core assembly 720 becomes larger continuously, that is, the flow rate of the first end 613 is controlled to become larger continuously, the water level in the first cavity 615 rises, and the output pressure is automatically adjusted, so that the output pressure is kept constant.

(2) When the input pressure becomes smaller, the flow passing through the inlet channel 620 is reduced, the water level in the first cavity 615 is lowered, the water pressure Pa in the first cavity 615 is reduced, the P1 is also reduced, P1 is smaller than P2, the diaphragm 710 is pressed and deformed upwards, the linkage valve core assembly 720 moves upwards, the opening of the valve port of the valve core assembly 720 is continuously enlarged, namely, the flow of the first end 613 is continuously increased, the water level in the first cavity 615 is increased, and the output pressure is automatically adjusted to maintain the constant output pressure. As the regulator valve 300 gradually returns to equilibrium, the pressure across the diaphragm 710 again returns to equilibrium, i.e., P1 — P2. When the opening of the valve port adjusted by the valve core assembly 720 is too large, the flow rate flowing through the valve port becomes large, the water level in the first cavity 615 rises, the water pressure Pa in the first cavity 615 becomes large, the P1 also becomes large, the P1 > P2, the diaphragm 710 deforms downward under pressure, the valve core assembly 720 moves downward in a linkage manner, the opening of the valve port adjusted by the valve core assembly 720 becomes smaller, namely, the flow rate of the first end 613 is controlled to become smaller, the water level in the first cavity 615 is lowered, and the output pressure is automatically adjusted to maintain constant output pressure.

In this embodiment, the valve core assembly 720 includes a valve core 721 and a first seal 722. The valve core 721 is provided with a conical surface 723, that is, the valve core 721 is a conical valve core, and the conical surface 723 is provided corresponding to the first end 613 to adjust the flow rate. The first seal 722 is nested on the valve core 721 and abuts between the inner surface of the regulating passage 611 and the outer surface of the valve core 721 to block the second end 614. The first sealing ring 722 can move with the valve core 721 and always abut against between the valve core 721 and the adjusting channel 611 to ensure the sealing performance and prevent the fluid from entering the main cavity 612 from the second end 614.

In order to facilitate the installation of the first sealing ring 722, the outer surface of the valve core 721 is provided with an installation ring groove 724, the first sealing ring 722 is nested in the installation ring groove 724, and the installation ring groove 724 can ensure the linkage effect of the first sealing ring 722 and the valve core 721.

Further, the spool 721 penetrates both ends of the regulation passage 611 and the diaphragm 710. The valve core assembly 720 further comprises a connecting piece 725 and a mounting sleeve 726, the connecting piece 725 is arranged in the first cavity 615 and sleeved on the valve core 721, and the mounting sleeve 726 is arranged in the second cavity 616 and covers one end of the valve core 721. The diaphragm 710 fits snugly between the connector 725 and the mounting sleeve 726, and the resilient member 730 abuts the connector 725. The connection 725 is engaged with the elastic member 730 to transmit the pressure of the elastic member 730 to the diaphragm 710 through the connection 725. The connecting piece 725 and the mounting sleeve 726 are matched together, and the clamping clip seals the diaphragm 710, so that good linkage between the diaphragm 710 and the valve core 721 is ensured, good sealing performance on two sides of the diaphragm 710 is also ensured, and fluid in the first cavity 615 is prevented from entering the second cavity 616 or fluid in the second cavity 616 is prevented from entering the first cavity 615.

Specifically, the connection member 725 is fixed to the valve core 721 by means of screw connection, and a position-limiting portion is provided on the outer surface of the valve core 721 to limit the position of the connection member 725 on the valve core 721. The mounting sleeve 726 is provided with a screw hole 727, and the screw hole 727 is in threaded fit with the end of the valve core 721.

A supporting portion 632 is disposed in the second cavity 616, and the supporting portion 632 cooperates with the mounting sleeve 726 to limit the stroke of the mounting sleeve 726, so as to limit the stroke of the valve plug 721, so that a proper gap is reserved between the conical surface 723 of the valve plug 721 and the valve port, and deformation of the conical surface 723 due to long-term contact with the valve port is avoided, thereby affecting the accuracy of flow rate adjustment.

Referring to fig. 5 and 6, the valve body 600 includes a valve base 630 and a valve cover 640, and the valve cover 640 covers the valve base 630 to clamp the diaphragm 710. Since the diaphragm 710 is clamped between the valve cover 640 and the valve base 630, good insulation between the first cavity 615 and the second cavity 616 can be ensured. The inlet channel 620, the adjusting channel 611, the first cavity 615 and the outlet channel 622 are disposed in the valve cover 640. Control passage 624 and second chamber 616 are disposed in valve base 630.

The diaphragm 710 has a flange 712 at its periphery, the valve cover 640 has an annular groove 642, and the flange 712 is received in the annular groove 642. The flange 712 can improve the sealing performance of the assembly, and meanwhile, the diaphragm 710 can be conveniently installed between the valve bottom 630 and the valve cover 640, so that the assembly efficiency is improved.

In order to further improve the sealing performance and the isolation performance, the outer side face of the flange 712 is provided with a first sealing convex ring 714, and the first sealing convex ring 714 is abutted with the side wall of the annular groove 642. The diaphragm 710 is provided with a second sealing flange 716, and the second sealing flange 716 abuts against the end face of the valve bottom 630.

In order to improve the sealing performance of the connection between the valve cover 640 and the valve base 630, a lateral ring groove 634 is formed on the outer side surface of the valve base 630, a second sealing ring 650 is formed between the lateral ring groove 634 and the inner side surface of the valve cover 640, and the second sealing ring 650 is pressed between the valve cover 640 and the valve base 630 in the lateral direction.

The valve cap 640 includes a cap 644 and a cover 646, and the cover 646 covers the cap 644 and is sealed by a rubber ring. The cover 644 has a mounting structure (not numbered) formed therein, the adjusting channel 611 is formed in the mounting structure, the elastic member 730 is compressed between the mounting structure and the connecting member 725, and the elastic member 730 is a spring.

With reference to fig. 3, 5 and 6, in the present embodiment, the assembling process of the pressure maintaining valve 300 of the intelligent toilet 100 is as follows:

first, the first sealing ring 722 is nested in the mounting ring groove 724 of the valve core 721, and one end of the valve core 721 penetrates through the adjusting channel 611 of the cover 644, so that the conical surface 723 is arranged corresponding to the first end 613 of the adjusting channel 611;

secondly, the elastic member 730 is sleeved outside the adjusting channel 611 (mounting structure), and the other end of the valve core 721 is sleeved with the connecting member 725, the membrane 710 and the mounting sleeve 726 in sequence, so that the mounting sleeve 726 is locked at the end of the valve core 721 to tightly press the membrane 710 and the connecting member 725 at the limiting part, and the flange 712 of the membrane 710 is inserted into the annular groove 642 of the cover 644;

finally, the second seal 650 is installed in a lateral groove 634 of the valve base 630, the valve base 630 is fixedly mounted to the bottom of the cover 644 by screws, and the cover plate 646 is fixedly mounted to the top of the cover 644 by screws.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A pressure maintaining valve, comprising:

a valve body having a valve cavity, an inlet flow passage, an outlet flow passage and a control passage, the valve cavity including a regulation passage and a main chamber, the regulation passage having a first end and a second end, the first end communicating with the inlet flow passage and the main chamber, respectively, the main chamber communicating with the outlet flow passage and the control passage, respectively, the inlet flow passage for inputting a fluid to have an input pressure, the outlet flow passage for outputting the fluid to have an output pressure, and the control passage for supplying a reference pressure; and

the self-balancing valve group is arranged in the main cavity, cuts off the second end, moves along the adjusting channel and adjusts the flow of the first end;

the self-balancing valve group is used for responding to the difference value change between the input pressure and the reference pressure and adjusting the flow quantity so as to keep the output pressure stable.

2. The surge valve defined in claim 1, wherein the self-balancing valve bank comprises:

the diaphragm is arranged in the main cavity in a deformable manner to divide the main cavity into a first cavity and a second cavity, the first cavity is respectively communicated with the adjusting channel and the outlet flow channel, and the second cavity is communicated with the control channel;

the valve core assembly moves along the adjusting channel to adjust the flow of the first end and cut off the second end; and

the elastic piece is abutted against the valve core assembly, so that the valve core assembly is abutted against the diaphragm.

3. The pressure maintenance valve according to claim 2, wherein the spool assembly includes:

the valve core is provided with a conical surface which is arranged corresponding to the first end and used for adjusting the flow; and

the first sealing ring is nested on the valve core and abutted between the inner surface of the adjusting channel and the outer surface of the valve core.

4. A pressure maintaining valve according to claim 3,

the valve core penetrates through two ends of the adjusting channel and the diaphragm;

the valve core assembly further comprises a connecting piece and an installation sleeve, the connecting piece is arranged in the first cavity and sleeved on the valve core, and the installation sleeve is arranged in the second cavity and sleeved on one end of the valve core;

the diaphragm is tightly attached between the connecting piece and the mounting sleeve, and the elastic piece is abutted to the connecting piece.

5. The pressure maintaining valve according to claim 4, wherein a support portion is provided in the second chamber, the support portion engaging the mounting sleeve.

6. The pressure maintaining valve according to any one of claims 2-5,

the valve body comprises a valve bottom and a valve cover, and the valve cover covers the valve bottom and clamps the diaphragm;

the inlet flow channel, the adjusting channel, the first cavity and the outlet flow channel are all arranged in the valve cover, and the control channel and the second cavity are all arranged in the valve bottom.

7. The surge-stabilizing valve according to claim 6, wherein the diaphragm is provided with a flange at its periphery, the valve cover is provided with an annular groove, and the flange is received in the annular groove.

8. The surge damping valve according to claim 7, wherein a first sealing convex ring is arranged on the outer side surface of the flanging, and the first sealing convex ring is abutted with the side wall of the annular groove.

9. The surge suppressor of claim 7, wherein said diaphragm is provided with a second sealing bead, said second sealing bead abutting an end face of said valve base.

10. An intelligent toilet, comprising:

a pressure maintaining valve as claimed in any one of claims 1 to 9; and

a pressure source in communication with a control passage of the pressure regulator valve.

Images